Crowdin sync

app/src/main/res/values-af-rZA/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-ar-rBH/strings.xml

@@ -815,6 +815,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">افتح باستخدام</string>
@@ -850,7 +851,7 @@
     <string name="title_ask_delete_rule">حذف القاعدة بشكل دائم؟</string>
     <string name="title_ask_discard">إلغاء المسودة؟</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -948,6 +949,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">المُرسِل مفقود</string>

app/src/main/res/values-ar-rEG/strings.xml

@@ -815,6 +815,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">افتح باستخدام</string>
@@ -850,7 +851,7 @@
     <string name="title_ask_delete_rule">حذف القاعدة بشكل دائم؟</string>
     <string name="title_ask_discard">إلغاء المسودة؟</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -948,6 +949,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">المُرسِل مفقود</string>

app/src/main/res/values-ar-rYE/strings.xml

@@ -815,6 +815,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">افتح باستخدام</string>
@@ -850,7 +851,7 @@
     <string name="title_ask_delete_rule">حذف القاعدة بشكل دائم؟</string>
     <string name="title_ask_discard">إلغاء المسودة؟</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -948,6 +949,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">المُرسِل مفقود</string>

app/src/main/res/values-az-rAZ/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Bununla aç</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Qaralama silinsin?</string>
     <string name="title_ask_show_html">Orijinal mesajın göstərilməsi, gizlilik həssaslı məlumatları sızdıra bilər</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Təsvirlərin göstərilməsi, gizlilik həssaslı məlumatların sızdıra bilər</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Göndərən əskikdir</string>

app/src/main/res/values-bg-rBG/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Отговори на всички</string>
     <string name="title_reply_list">Отговори на списък</string>
     <string name="title_reply_receipt">Изпрати разписка за прочетено</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Отговор с шаблон</string>
     <string name="title_move_undo">Премести в %1$s (%2$d)</string>
     <string name="title_open_with">Отвори с</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Изтриване на правилото за постоянно?</string>
     <string name="title_ask_discard">Отхвърляне на черновата?</string>
     <string name="title_ask_show_html">При показването на оригиналното съобщение може да изтече чувствителна поверителна информация</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Показване на оригиналното съобщение с тъмен фон не е възможно, защото може да причини невидими тъмни текстове и изображения</string>
     <string name="title_ask_show_html_images">Винаги показвайте изображенията при показване на оригиналните съобщения</string>
     <string name="title_ask_show_image">При показването на изображението може да изтече поверителна информация</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Напомнянията могат да бъдат активирани отново в настройките за изпращане</string>
     <string name="title_send_plain_text">Само обикновен текст</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Заявка за разписка</string>
     <string name="title_send_receipt_remark">Повечето доставчици и имейл клиенти игнорират заявките за получаване</string>
     <string name="title_from_missing">Липсва изпращач</string>

app/src/main/res/values-bn-rBD/strings.xml

@@ -770,6 +770,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -805,7 +806,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -903,6 +904,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-bn-rIN/strings.xml

@@ -770,6 +770,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -805,7 +806,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -903,6 +904,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-ca-rES/strings.xml

@@ -770,6 +770,7 @@ La creació i l\'ús de regles és una característica professional.    </string
     <string name="title_reply_to_all">Respon a tots</string>
     <string name="title_reply_list">Respon a la llista</string>
     <string name="title_reply_receipt">Enviar confirmació de lectura</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Respondre amb una plantilla</string>
     <string name="title_move_undo">Movent a %1$s (%2$d)</string>
     <string name="title_open_with">Obre amb</string>
@@ -805,7 +806,7 @@ La creació i l\'ús de regles és una característica professional.    </string
     <string name="title_ask_delete_rule">Esborrar regla per sempre?</string>
     <string name="title_ask_discard">Voleu rebutjar l\'esborrany?</string>
     <string name="title_ask_show_html">Si es mostra el missatge original es pot filtrar informació sensible a la privadesa</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">No es pot mostrar el missatge original amb un fons fosc perquè pot provocar imatges i textos foscos invisibles</string>
     <string name="title_ask_show_html_images">Mostrar sempre les imatges al mostrar els missatges originals</string>
     <string name="title_ask_show_image">Si es mostra imatges, es pot filtrar informació sensible a la privadesa</string>
@@ -903,6 +904,7 @@ La creació i l\'ús de regles és una característica professional.    </string
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Els recordatoris es poden tornar a activar a la configuració d\'enviament</string>
     <string name="title_send_plain_text">Només text pla</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Sol·licita confirmació de lectura</string>
     <string name="title_send_receipt_remark">La majoria de proveïdors i clients de correu electrònic ignoren les sol·licituds de recepció</string>
     <string name="title_from_missing">Falta l\'emissor</string>

app/src/main/res/values-cs-rCZ/strings.xml

@@ -3,7 +3,7 @@
     <string name="app_search">FairEmail vyhledávání</string>
     <string name="app_changelog">Přehled změn</string>
     <string name="app_welcome">FairEmail je e-mailový klient s otevřeným zdrojovým kódem zaměřený na soukromí a bezpečnost. Z tohoto důvodu se některé funkce mohou chovat odlišně než jste zvyklí.</string>
-    <string name="app_limitations">For example, messages are reformatted by default to remove unsafe elements and to improve readability, and opening links needs to be confirmed for safety. Both can be disabled if desired.</string>
+    <string name="app_limitations">Například, zprávy jsou ve výchozím nastavení přeformátovány, aby byly odstraněny nezabezpečené prvky a zlepšila se čitelnost, a otevírání odkazů je pro bezpečnost potřeba potvrdit. Oboje lze v případě potřeby vypnout.</string>
     <string name="app_crash">FairEmail není na tomto zařízení podporován, protože chyby v Androidu způsobují jeho pády</string>
     <string name="app_exit">Znovu „zpět“ pro ukončení</string>
     <string name="app_cake">Nedostatek místa v úložišti</string>
@@ -793,6 +793,7 @@
     <string name="title_reply_to_all">Odpovědět všem</string>
     <string name="title_reply_list">Odpovědět seznamu</string>
     <string name="title_reply_receipt">Odeslat potvrzení o přečtení</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Odpovědět šablonou</string>
     <string name="title_move_undo">Přesouvání do %1$s (%2$d)</string>
     <string name="title_open_with">Otevřít v aplikaci</string>
@@ -828,7 +829,7 @@
     <string name="title_ask_delete_rule">Trvale smazat pravidlo?</string>
     <string name="title_ask_discard">Zahodit koncept?</string>
     <string name="title_ask_show_html">Zobrazením původní zprávy může dojít k úniku citlivých informací</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Použít tmavý motiv</string>
     <string name="title_ask_show_html_remark">Zobrazení původní zprávy na tmavém pozadí není možné, neboť může způsobit zneviditelnění tmavých textů a obrázků</string>
     <string name="title_ask_show_html_images">Vždy zobrazit obrázky při zobrazení původních zpráv</string>
     <string name="title_ask_show_image">Zobrazením obrázků může dojít k úniku citlivých informací</string>
@@ -926,6 +927,7 @@
     <string name="title_key_missing">Není klíč pro %1$s</string>
     <string name="title_send_reminder_remark">Připomenutí lze znovu zapnout v nastavení odesílání</string>
     <string name="title_send_plain_text">Pouze prostý text</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Požádat o potvrzení</string>
     <string name="title_send_receipt_remark">Většina poskytovatelů a e-mailových klientů ignoruje žádosti o potvrzení</string>
     <string name="title_from_missing">Chybí odesílatel</string>

app/src/main/res/values-da-rDK/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Besvar alle</string>
     <string name="title_reply_list">Besvar liste</string>
     <string name="title_reply_receipt">Send læst-kvittering</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Besvar med skabelon</string>
     <string name="title_move_undo">Flytter til %1$s (%2$d)</string>
     <string name="title_open_with">Åbn med</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Slet regel permanent?</string>
     <string name="title_ask_discard">Kassér kladde?</string>
     <string name="title_ask_show_html">Visning af beskedindhold kan lække personfølsomme data</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Benyt mørkt tema</string>
+    <string name="title_ask_show_html_dark">Benyt mørkt tema</string>
     <string name="title_ask_show_html_remark">Visning af originalbeskeden på en mørk baggrund er ikke mulig, da det kan afstedkomme usynlige mørke tekster og billeder</string>
     <string name="title_ask_show_html_images">Vis altid billeder, når originalbeskederne vises</string>
     <string name="title_ask_show_image">Visning af billeder kan lække personfølsomme data</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Ingen tast til %1$s</string>
     <string name="title_send_reminder_remark">Påmindelser kan geaktiveres under Send-indstillinger</string>
     <string name="title_send_plain_text">Kun klartekst</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Bed om kvittering</string>
     <string name="title_send_receipt_remark">De fleste udbydere og e-mailklienter ignorerer kvitteringsanmodninger</string>
     <string name="title_from_missing">Afsender mangler</string>

app/src/main/res/values-de-rAT/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Allen antworten</string>
     <string name="title_reply_list">An Liste antworten</string>
     <string name="title_reply_receipt">Lesebestätigung senden</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Mit Vorlage antworten</string>
     <string name="title_move_undo">Wird nach »%1$s« verschoben (%2$d)</string>
     <string name="title_open_with">Öffnen mit</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Regel dauerhaft löschen?</string>
     <string name="title_ask_discard">Entwurf löschen?</string>
     <string name="title_ask_show_html">Das Anzeigen der originalen Nachricht kann vertrauliche Daten preisgeben</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Dunkles Design verwenden</string>
+    <string name="title_ask_show_html_dark">Dunkles Design verwenden</string>
     <string name="title_ask_show_html_remark">Das Anzeigen der Originalnachricht mit dunklem Hintergrund ist nicht möglich, da dadurch dunkle Texte und Bilder nicht sichtbar wären</string>
     <string name="title_ask_show_html_images">Bilder immer anzeigen, wenn Originalnachrichten angezeigt werden</string>
     <string name="title_ask_show_image">Das Anzeigen von Bildern kann vertrauliche Daten preisgeben</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Kein Schlüssel für %1$s</string>
     <string name="title_send_reminder_remark">Erinnerungen können in den Sendeeinstellungen wieder aktiviert werden</string>
     <string name="title_send_plain_text">Nur einfacher Text</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Bestätigung anfordern</string>
     <string name="title_send_receipt_remark">Die meisten Anbieter und E-Mail-Programme ignorieren Empfangsanforderungen</string>
     <string name="title_from_missing">Absender fehlt</string>

app/src/main/res/values-de-rDE/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Allen antworten</string>
     <string name="title_reply_list">An Liste antworten</string>
     <string name="title_reply_receipt">Lesebestätigung senden</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Mit Vorlage antworten</string>
     <string name="title_move_undo">Wird nach »%1$s« verschoben (%2$d)</string>
     <string name="title_open_with">Öffnen mit</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Regel dauerhaft löschen?</string>
     <string name="title_ask_discard">Entwurf löschen?</string>
     <string name="title_ask_show_html">Das Anzeigen der originalen Nachricht kann vertrauliche Daten preisgeben</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Dunkles Design verwenden</string>
+    <string name="title_ask_show_html_dark">Dunkles Design verwenden</string>
     <string name="title_ask_show_html_remark">Das Anzeigen der Originalnachricht mit dunklem Hintergrund ist nicht möglich, da dadurch dunkle Texte und Bilder nicht sichtbar wären</string>
     <string name="title_ask_show_html_images">Bilder immer anzeigen, wenn Originalnachrichten angezeigt werden</string>
     <string name="title_ask_show_image">Das Anzeigen von Bildern kann vertrauliche Daten preisgeben</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Kein Schlüssel für %1$s</string>
     <string name="title_send_reminder_remark">Erinnerungen können in den Sendeeinstellungen wieder aktiviert werden</string>
     <string name="title_send_plain_text">Nur einfacher Text</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Bestätigung anfordern</string>
     <string name="title_send_receipt_remark">Die meisten Anbieter und E-Mail-Programme ignorieren Empfangsanforderungen</string>
     <string name="title_from_missing">Absender fehlt</string>

app/src/main/res/values-de-rLI/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Allen antworten</string>
     <string name="title_reply_list">An Liste antworten</string>
     <string name="title_reply_receipt">Lesebestätigung senden</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Mit Vorlage antworten</string>
     <string name="title_move_undo">Wird nach »%1$s« verschoben (%2$d)</string>
     <string name="title_open_with">Öffnen mit</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Regel dauerhaft löschen?</string>
     <string name="title_ask_discard">Entwurf löschen?</string>
     <string name="title_ask_show_html">Das Anzeigen der originalen Nachricht kann vertrauliche Daten preisgeben</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Dunkles Design verwenden</string>
+    <string name="title_ask_show_html_dark">Dunkles Design verwenden</string>
     <string name="title_ask_show_html_remark">Das Anzeigen der Originalnachricht mit dunklem Hintergrund ist nicht möglich, da dadurch dunkle Texte und Bilder nicht sichtbar wären</string>
     <string name="title_ask_show_html_images">Bilder immer anzeigen, wenn Originalnachrichten angezeigt werden</string>
     <string name="title_ask_show_image">Das Anzeigen von Bildern kann vertrauliche Daten preisgeben</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Kein Schlüssel für %1$s</string>
     <string name="title_send_reminder_remark">Erinnerungen können in den Sendeeinstellungen wieder aktiviert werden</string>
     <string name="title_send_plain_text">Nur einfacher Text</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Bestätigung anfordern</string>
     <string name="title_send_receipt_remark">Die meisten Anbieter und E-Mail-Programme ignorieren Empfangsanforderungen</string>
     <string name="title_from_missing">Absender fehlt</string>

app/src/main/res/values-el-rGR/strings.xml

@@ -770,6 +770,7 @@
     <string name="title_reply_to_all">Απάντηση σε όλους</string>
     <string name="title_reply_list">Απάντηση σε λίστα</string>
     <string name="title_reply_receipt">Αποστολή αποδεικτικού ανάγνωσης</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Απάντηση με ένα πρότυπο</string>
     <string name="title_move_undo">Μετακίνηση προς %1$s (%2$d)</string>
     <string name="title_open_with">Άνοιγμα με</string>
@@ -805,7 +806,7 @@
     <string name="title_ask_delete_rule">Οριστική διαγραφή του κανόνα;</string>
     <string name="title_ask_discard">Απόρριψη προχείρου;</string>
     <string name="title_ask_show_html">Η προβολή του αρχικού μηνύματος μπορεί να προδώσει ευαίσθητα προσωπικά δεδομένα</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Χρήση σκοτεινού θέματος</string>
+    <string name="title_ask_show_html_dark">Χρήση σκοτεινού θέματος</string>
     <string name="title_ask_show_html_remark">Η προβολή του αρχικού μηνύματος σε σκούρο φόντο δεν είναι εφικτή, καθώς ενδέχεται να κάνει αόρατα κείμενα και εικόνες με σκούρα χρώματα</string>
     <string name="title_ask_show_html_images">Να προβάλλονται πάντοτε οι εικόνες κατά την προβολή των αρχικών μηνυμάτων</string>
     <string name="title_ask_show_image">Η προβολή των εικόνων ίσως προκαλέσει διαρροή ευαίσθητων προσωπικών δεδομένων</string>
@@ -903,6 +904,7 @@
     <string name="title_key_missing">Κανένα κλειδί για %1$s</string>
     <string name="title_send_reminder_remark">Οι ειδοποιήσεις μπορούν πάλι να ενεργοποιηθούν από τις ρυθμίσεις αποστολής</string>
     <string name="title_send_plain_text">Απλό κείμενο μόνο</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Αίτημα για αποδεικτικό</string>
     <string name="title_send_receipt_remark">Οι περισσότεροι πάροχοι και πελάτες ταχυδρομείου αγνοούν τα αιτήματα αποδεικτικού</string>
     <string name="title_from_missing">Λείπει αποστολέας</string>

app/src/main/res/values-en-rGB/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-es-rES/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Responder a todos</string>
     <string name="title_reply_list">Responder a la lista</string>
     <string name="title_reply_receipt">Enviar acuse de lectura</string>
+    <string name="title_reply_address_unknown">Reportar \'dirección desconocida\'</string>
     <string name="title_reply_template">Responder con plantilla</string>
     <string name="title_move_undo">Moviendo a %1$s (%2$d)</string>
     <string name="title_open_with">Abrir con</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">¿Eliminar regla permanentemente?</string>
     <string name="title_ask_discard">¿Descartar el borrador?</string>
     <string name="title_ask_show_html">Mostrar el mensaje original puede filtrar información privada sensible</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Usar tema oscuro</string>
+    <string name="title_ask_show_html_dark">Usar tema oscuro</string>
     <string name="title_ask_show_html_remark">No es posible mostrar el mensaje original con un fondo oscuro porque puede causar que textos e imágenes oscuros sean invisibles</string>
     <string name="title_ask_show_html_images">Siempre mostrar imágenes al mostrar mensajes originales</string>
     <string name="title_ask_show_image">Mostrar imágenes puede filtrar información privada sensible</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">No hay clave para %1$s</string>
     <string name="title_send_reminder_remark">Los recordatorios pueden ser activados de nuevo en la configuración de envío</string>
     <string name="title_send_plain_text">Sólo en texto plano</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Solicitar acuse</string>
     <string name="title_send_receipt_remark">La mayoría de los clientes y proveedores de email ignoran los pedidos de recibos</string>
     <string name="title_from_missing">Falta remitente</string>

app/src/main/res/values-eu-rES/strings.xml

@@ -770,6 +770,7 @@
     <string name="title_reply_to_all">Erantzun guztiei</string>
     <string name="title_reply_list">Erantzun zerrendari</string>
     <string name="title_reply_receipt">Bidali jaso izanaren agiria</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Erantzun txantiloia erabiliz</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Ireki honekin</string>
@@ -805,7 +806,7 @@
     <string name="title_ask_delete_rule">Ezabatu araua behin betiko?</string>
     <string name="title_ask_discard">Baztertu zirriborroa?</string>
     <string name="title_ask_show_html">Jatorrizko mezua erakusteak informazio pribatua agerira ekar lezake</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Ezin da jatorrizko mezua atzealde ilunean erakutsi testu eta irudi batzuk ikusezinak bihurtu litezkelako</string>
     <string name="title_ask_show_html_images">Beti erakutsi irudiak jatorrizko mezuak erakustean</string>
     <string name="title_ask_show_image">Irudiak bistaratzeak informazio probatua agerira ekar lezake</string>
@@ -903,6 +904,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Oroigarriak berriro gaitu daitezke bidalketa ezarpenetan</string>
     <string name="title_send_plain_text">Testu soila besterik ez</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Eskatu agiria</string>
     <string name="title_send_receipt_remark">Hornitzaile eta bezero gehienek ez dituzte jasotze agiri eskariak aintzat hartzen</string>
     <string name="title_from_missing">Igorlea falta da</string>

app/src/main/res/values-fa-rIR/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">پاسخ به همه</string>
     <string name="title_reply_list">پاسخ به لیست</string>
     <string name="title_reply_receipt">فرستادن رسید خواندن</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">پاسخ با قالب</string>
     <string name="title_move_undo">در حال انتقال به %1$s (%2$d)</string>
     <string name="title_open_with">باز کردن با</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">دستور به صورت همیشگی حذف شود؟</string>
     <string name="title_ask_discard">پیش‌نویس‌ کنار گذاشته شود؟</string>
     <string name="title_ask_show_html">نمایش پیام اصلی می تواند موجب نشت اطلاعات حساس شود</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">نمایش تصاویر می تواند موجب نشت اطلاعات حساس شود</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">هیچ کلیدی برای %1$s نیست</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">فقط متن ساده</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">درخواست رسید دریافت</string>
     <string name="title_send_receipt_remark">بیشتر فراهم‌کنندگان و کارخواه‌ها، درخواست‌های رسید دریافت را نادیده می‌گیرند</string>
     <string name="title_from_missing">فرستنده وجود ندارد</string>

app/src/main/res/values-fi-rFI/strings.xml

@@ -769,6 +769,7 @@
     <string name="title_reply_to_all">Vastaa kaikille</string>
     <string name="title_reply_list">Vastaa listalle</string>
     <string name="title_reply_receipt">Lähetä vastaanottokuittaus</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Vastaa viestipohjalla</string>
     <string name="title_move_undo">Siirretään kansioon %1$s (%2$d)</string>
     <string name="title_open_with">Avaa sovelluksessa</string>
@@ -804,7 +805,7 @@
     <string name="title_ask_delete_rule">Poistetaanko sääntö pysyvästi?</string>
     <string name="title_ask_discard">Hylätäänkö luonnos?</string>
     <string name="title_ask_show_html">Alkuperäisen viestin näyttäminen voi vuotaa yksityisyyden kannalta haitallisia tietoja</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Alkuperäisen viestin näyttäminen tummalla taustalla ei ole mahdollista, koska tummat tekstit ja kuvat eivät erotu</string>
     <string name="title_ask_show_html_images">Näytä aina kuvat alkuperäisiä viestejä näytettäessä</string>
     <string name="title_ask_show_image">Kuvien näyttäminen voi vuotaa yksityisyyden kannalta haitallisia tietoja</string>
@@ -902,6 +903,7 @@
     <string name="title_key_missing">Ei avaimia sähköpostiosoitteille %1$s</string>
     <string name="title_send_reminder_remark">Muistutukset voidaan ottaa uudelleen käyttöön lähetysasetuksissa</string>
     <string name="title_send_plain_text">Lähetä muotoilemattomana tekstinä</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Pyydä kuittausta</string>
     <string name="title_send_receipt_remark">Useimmat palveluntarjoajat ja sähköpostisovellukset jättävät kuittauspyynnöt huomioimatta</string>
     <string name="title_from_missing">Lähettäjä puuttuu</string>

app/src/main/res/values-fr-rCA/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Répondre à tous</string>
     <string name="title_reply_list">Répondre à la liste</string>
     <string name="title_reply_receipt">Envoyer une confirmation de lecture</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Répondre avec un modèle</string>
     <string name="title_move_undo">Déplacement vers %1$s (%2$d)</string>
     <string name="title_open_with">Ouvrir avec</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Supprimer définitivement la règle?</string>
     <string name="title_ask_discard">Abandonner le brouillon?</string>
     <string name="title_ask_show_html">L’affichage du message original peut entraîner la divulgation d’informations confidentielles</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Utiliser le thème sombre</string>
+    <string name="title_ask_show_html_dark">Utiliser le thème sombre</string>
     <string name="title_ask_show_html_remark">L’affichage du message original sur fond sombre n’est pas possible car le texte et les images sombres pourraient ne pas être visibles</string>
     <string name="title_ask_show_html_images">Toujours afficher les images lors de l’affichage des messages originaux</string>
     <string name="title_ask_show_image">L’affichage des images peut entraîner la divulgation d’informations confidentielles</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Aucune clé pour %1$s</string>
     <string name="title_send_reminder_remark">Les rappels peuvent être activés à nouveau dans les paramètres d\'envoi</string>
     <string name="title_send_plain_text">Texte brut seulement</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Demander une confirmation</string>
     <string name="title_send_receipt_remark">La plupart des fournisseurs et clients de messagerie ignorent les demandes d’accusé de réception</string>
     <string name="title_from_missing">Expéditeur manquant</string>

app/src/main/res/values-fr-rFR/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Répondre à tous</string>
     <string name="title_reply_list">Répondre à la liste</string>
     <string name="title_reply_receipt">Envoyer une confirmation de lecture</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Répondre avec un modèle</string>
     <string name="title_move_undo">Déplacement vers %1$s (%2$d)</string>
     <string name="title_open_with">Ouvrir avec</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Supprimer définitivement la règle ?</string>
     <string name="title_ask_discard">Abandonner le brouillon ?</string>
     <string name="title_ask_show_html">L’affichage du message original peut entraîner la divulgation d’informations confidentielles</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Utiliser le thème sombre</string>
+    <string name="title_ask_show_html_dark">Utiliser le thème sombre</string>
     <string name="title_ask_show_html_remark">L’affichage du message original sur fond sombre n’est pas possible car cela pourrait rendre invisibles le texte et les images sombres</string>
     <string name="title_ask_show_html_images">Toujours afficher les images lors de l\'affichage des messages originaux</string>
     <string name="title_ask_show_image">L’affichage des images peut entraîner la divulgation d’informations confidentielles</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Aucune clé pour %1$s</string>
     <string name="title_send_reminder_remark">Les rappels peuvent être activés à nouveau dans les paramètres d\'envoi</string>
     <string name="title_send_plain_text">Texte brut seulement</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Demander une confirmation</string>
     <string name="title_send_receipt_remark">La plupart des fournisseurs et des clients de messagerie ignorent les demandes d\'accusé de réception</string>
     <string name="title_from_missing">Expéditeur manquant</string>

app/src/main/res/values-fy-rNL/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Antwurdzje allegear</string>
     <string name="title_reply_list">Antwurdzje op list</string>
     <string name="title_reply_receipt">Stjoer lêsbewiis</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Antwurdzje mei sjabloan</string>
     <string name="title_move_undo">Bewege nei %1$s (%2$d)</string>
     <string name="title_open_with">Iepenje mei</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Regel permanint wiskje?</string>
     <string name="title_ask_discard">Untwerp fuortjaan?</string>
     <string name="title_ask_show_html">It orizjinele berjocht sjen litte kin privacy gefoelige ynformaasje lekke</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">It orizjinele berjocht werjaan op in donkere eftergrûn is net mooglik, om\'t tsjustere teksten en ôfbyldings ûnsichtber kinne wurde</string>
     <string name="title_ask_show_html_images">Toan altyd ôfbyldings by it werjaan fan orizjinele berjochten</string>
     <string name="title_ask_show_image">Ofbyldings sjen kinne privacy-sensitive ynformaasje lekke</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Gjin kaai foar %1$s</string>
     <string name="title_send_reminder_remark">Herinneringen kinne wer ynskeakele wurde yn \'e stjoereynstellings</string>
     <string name="title_send_plain_text">Platte tekst allinich</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Untfange oanfreegje</string>
     <string name="title_send_receipt_remark">De measte oanbieders en e-postkliïnten negearje ûntfangstoanfragen</string>
     <string name="title_from_missing">Ofstjoerder mist</string>

app/src/main/res/values-gl-rES/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Responder a todos</string>
     <string name="title_reply_list">Responder á lista</string>
     <string name="title_reply_receipt">Enviar confirmación de lectura</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Responder cun patrón</string>
     <string name="title_move_undo">Movendo a %1$s (%2$d)</string>
     <string name="title_open_with">Abrir con</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Borrar regra definitivamente?</string>
     <string name="title_ask_discard">Desbotar borrador?</string>
     <string name="title_ask_show_html">Mostrar a mensaxe orixinal pode filtrar información privada sensible</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Non é posible mostrar a mensaxe orixinal nun fondo escuro porque faría que os textos e as imaxes escuras tamén invisibles</string>
     <string name="title_ask_show_html_images">Mostrar sempre as imaxes cando se vexan as imaxes orixinais</string>
     <string name="title_ask_show_image">Mostrar imaxes pode filtrar información privada sensible</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Non hai chave para %1$s</string>
     <string name="title_send_reminder_remark">Pódese habilitar de novo os recordatorios na configuración de envío</string>
     <string name="title_send_plain_text">Só en formato texto</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Confirmación de lectura</string>
     <string name="title_send_receipt_remark">A maioría de provedores e de clientes de correo ignoran as confirmacións de envío</string>
     <string name="title_from_missing">Non hai remitente</string>

app/src/main/res/values-hi-rIN/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-hr-rHR/strings.xml

@@ -781,6 +781,7 @@
     <string name="title_reply_to_all">Odgovoriti pošiljatelju</string>
     <string name="title_reply_list">Odgovoriti popisu</string>
     <string name="title_reply_receipt">Pošalji potvrdu za čitanje</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Odgovori pomoću predloška</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Otvori sa</string>
@@ -816,7 +817,7 @@
     <string name="title_ask_delete_rule">Želite li trajno izbrisati pravilo?</string>
     <string name="title_ask_discard">Odbaciti skicu?</string>
     <string name="title_ask_show_html">Prikazivanje izvorne poruke može propuštati povjerljive informacije</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Prikazivanje izvorne poruke na tamnoj pozadini nije moguće jer može uzrokovati nevidljive tamne tekstove i slike</string>
     <string name="title_ask_show_html_images">Uvijek prikažite slike pri prikazivanju originalnih poruka</string>
     <string name="title_ask_show_image">Prikazivanje slika može propuštati povjerljive informacije</string>
@@ -914,6 +915,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Samo običan tekst</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Zatražite potvrdu</string>
     <string name="title_send_receipt_remark">Većina pružatelja usluga i klijenti e-pošte zanemaruju zahtjeve za primanjem</string>
     <string name="title_from_missing">Nedostaje pošiljatelj</string>

app/src/main/res/values-hu-rHU/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Válasz mindenkinek</string>
     <string name="title_reply_list">Válasz listára</string>
     <string name="title_reply_receipt">Olvasási visszaigazolás küldése</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Válasz sablon használatával</string>
     <string name="title_move_undo">Mozgatás ide: %1$s (%2$d)</string>
     <string name="title_open_with">Megnyitás a következővel</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Véglegesen törli a szabályt?</string>
     <string name="title_ask_discard">Elveti a piszkozatot?</string>
     <string name="title_ask_show_html">Az eredeti üzenet megjelenítése érzékeny adatok kiszivárgásával járhat</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Az eredeti üzenet megjelenítése sötét háttérrel nem lehetséges mert láthatatlan sötét szövegeket és képeket okozhat</string>
     <string name="title_ask_show_html_images">Képek megjelenítése az eredeti üzenetek megjelenítésekor</string>
     <string name="title_ask_show_image">A képek megjelenítése érzékeny adatok kiszivárgásával járhat</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Nincs kulcs a %1$s címhez</string>
     <string name="title_send_reminder_remark">Az emlékeztetők újra ngedéjezhetőek a küldési beállításoknál</string>
     <string name="title_send_plain_text">Csak egyszerű szöveg</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Visszaigazolás kérése</string>
     <string name="title_send_receipt_remark">A legtöbb email szolgáltató és kliens figyelmen kívül hagyja a visszajelzés kéréseket</string>
     <string name="title_from_missing">A feladó hiányzik</string>

app/src/main/res/values-in-rID/strings.xml

@@ -756,6 +756,7 @@
     <string name="title_reply_to_all">Balas ke semua</string>
     <string name="title_reply_list">Balas berdasarkan daftar</string>
     <string name="title_reply_receipt">Kirim bukti telah dibaca</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Balas dengan template</string>
     <string name="title_move_undo">Sedang dipindahkan ke %1$s (%2$d)</string>
     <string name="title_open_with">Buka dengan</string>
@@ -791,7 +792,7 @@
     <string name="title_ask_delete_rule">Hapus aturan secara permanen?</string>
     <string name="title_ask_discard">Buang draf?</string>
     <string name="title_ask_show_html">Menampilkan pesan asli dapat membocorkan informasi sensitif privasi</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Selalu tampilkan gambar saat menampilkan pesan asli</string>
     <string name="title_ask_show_image">Menampilkan gambar dapat membocorkan informasi sensitif privasi</string>
@@ -889,6 +890,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Pengingat dapat diaktifkan kembali di pengaturan kirim</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Sebagian besar layanan penyedia dan klien email mengabaikan permintaan tanda terima</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-it-rIT/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Rispondi a tutti</string>
     <string name="title_reply_list">Rispondi alla lista</string>
     <string name="title_reply_receipt">Invia conferma di lettura</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Rispondi con modello</string>
     <string name="title_move_undo">Spostamento verso %1$s (%2$d)</string>
     <string name="title_open_with">Apri con</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Eliminare la regola permanentemente?</string>
     <string name="title_ask_discard">Eliminare la bozza?</string>
     <string name="title_ask_show_html">Mostrare il messaggio originale rende possibile una fuga di informazioni personali sensibili</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Non è possibile visualizzare il messaggio originale con uno sfondo scuro perché potrebbe nascondere testi e immagini</string>
     <string name="title_ask_show_html_images">Mostra sempre le immagini nella visualizzazione dei messaggi originali</string>
     <string name="title_ask_show_image">Mostrare le immagini rende possibile una fuga di informazioni personali sensibili</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Nessuna chiave per %1$s</string>
     <string name="title_send_reminder_remark">I promemoria possono essere nuovamente abilitati nelle impostazioni di invio</string>
     <string name="title_send_plain_text">Solo testo semplice</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Richiedi ricevuta</string>
     <string name="title_send_receipt_remark">La maggior parte dei provider e dei client di posta elettronica ignora le richieste di ricevuta</string>
     <string name="title_from_missing">Mittente mancante</string>

app/src/main/res/values-iw-rIL/strings.xml

@@ -793,6 +793,7 @@
     <string name="title_reply_to_all">השב לכולם</string>
     <string name="title_reply_list">השב לרשימה</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">פתיחה באמצעות</string>
@@ -828,7 +829,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -926,6 +927,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-ja-rJP/strings.xml

@@ -759,6 +759,7 @@
     <string name="title_reply_to_all">全員に返信</string>
     <string name="title_reply_list">リストに返信</string>
     <string name="title_reply_receipt">開封確認メッセージを送信</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">テンプレートで返信</string>
     <string name="title_move_undo">%1$s に移動中 (%2$d)</string>
     <string name="title_open_with">開く</string>
@@ -794,7 +795,7 @@
     <string name="title_ask_delete_rule">ルールを完全に削除しますか？</string>
     <string name="title_ask_discard">下書きを破棄しますか？</string>
     <string name="title_ask_show_html">元のメッセージを表示するとプライバシーの機密情報が漏洩する可能性が有ります</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">ダーク背景で元のメッセージを表示する事は出来ません。これは目で見にくい暗いテキストや画像が見えなくなる可能性がある為です</string>
     <string name="title_ask_show_html_images">元のメッセージを表示する時に常に画像を表示する</string>
     <string name="title_ask_show_image">画像表示するとプライバシーの機密情報が漏洩する可能性が有ります</string>
@@ -892,6 +893,7 @@
     <string name="title_key_missing">%1$s のキーがありません</string>
     <string name="title_send_reminder_remark">リマインダーは送信設定で再び有効にできます</string>
     <string name="title_send_plain_text">プレーンテキストのみ</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">開封確認メッセージを要求する</string>
     <string name="title_send_receipt_remark">殆どのプロバイダーと電子メールクライアントは開封確認メッセージの要求を無視します</string>
     <string name="title_from_missing">送信者がいません</string>

app/src/main/res/values-ka-rGE/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-kk-rKZ/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-ko-rKR/strings.xml

@@ -760,6 +760,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -795,7 +796,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -893,6 +894,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-lt-rLT/strings.xml

@@ -793,6 +793,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -828,7 +829,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -926,6 +927,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-nl-rNL/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Antwoord aan iedereen</string>
     <string name="title_reply_list">Antwoord aan lijst</string>
     <string name="title_reply_receipt">Stuur leesbevestiging</string>
+    <string name="title_reply_address_unknown">Rapporteer \'adres onbekend\'</string>
     <string name="title_reply_template">Antwoord met sjabloon</string>
     <string name="title_move_undo">Verplaatsen naar %1$s (%2$d)</string>
     <string name="title_open_with">Openen met</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Verwijder regel definitief?</string>
     <string name="title_ask_discard">Concept weggooien?</string>
     <string name="title_ask_show_html">Het originele bericht tonen kan privacy gevoelige informatie lekken</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Gebruik donker thema</string>
+    <string name="title_ask_show_html_dark">Gebruik donker thema</string>
     <string name="title_ask_show_html_remark">Het weergeven van het oorspronkelijke bericht met een donkere achtergrond is niet mogelijk omdat het onzichtbare donkere teksten en afbeeldingen kan veroorzaken</string>
     <string name="title_ask_show_html_images">Altijd afbeeldingen tonen bij het weergeven van originele berichten</string>
     <string name="title_ask_show_image">Afbeeldingen tonen kan privacy gevoelige informatie lekken</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Geen sleutel voor %1$s</string>
     <string name="title_send_reminder_remark">Herinneringen kunnen weer worden ingeschakeld in de verzendinstellingen</string>
     <string name="title_send_plain_text">Alleen platte tekst</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Statusrapport</string>
     <string name="title_send_receipt">Vraag bevestiging</string>
     <string name="title_send_receipt_remark">De meeste providers en e-mail clients negeren bevestigingsverzoeken</string>
     <string name="title_from_missing">Zender ontbreekt</string>

app/src/main/res/values-nn-rNO/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Svar alle</string>
     <string name="title_reply_list">Svar på listen</string>
     <string name="title_reply_receipt">Send lesekvittering</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Svar med mal</string>
     <string name="title_move_undo">Flytter til %1$s (%2$d)</string>
     <string name="title_open_with">Åpne med</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Slett regel permanent?</string>
     <string name="title_ask_discard">Kast utkast?</string>
     <string name="title_ask_show_html">Visning av den opprinnelige meldingen kan lekke sensitiv informasjon</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Det er ikke mulig å vise den opprinnelige meldingen med mørk bakgrunn fordi den kan forårsake usynlige mørke tekster og bilder</string>
     <string name="title_ask_show_html_images">Vis alltid bilder når du viser originale meldinger</string>
     <string name="title_ask_show_image">Å vise bilder kan lekke sensitiv informasjon</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Ingen nøkkel for %1$s</string>
     <string name="title_send_reminder_remark">Påminnelser kan aktiveres igjen i Send-innstillingene</string>
     <string name="title_send_plain_text">Bare vanlig tekst</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Be om kvittering</string>
     <string name="title_send_receipt_remark">De fleste tilbydere og e-post klienter ignorerer kvitterings forespørsler</string>
     <string name="title_from_missing">Avsender mangler</string>

app/src/main/res/values-no-rNO/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Svar alle</string>
     <string name="title_reply_list">Svar på listen</string>
     <string name="title_reply_receipt">Send lesekvittering</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Svar med mal</string>
     <string name="title_move_undo">Flytter til %1$s (%2$d)</string>
     <string name="title_open_with">Åpne med</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Slett regel permanent?</string>
     <string name="title_ask_discard">Kast utkast?</string>
     <string name="title_ask_show_html">Visning av den opprinnelige meldingen kan lekke sensitiv informasjon</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Det er ikke mulig å vise den opprinnelige meldingen med mørk bakgrunn fordi den kan forårsake usynlige mørke tekster og bilder</string>
     <string name="title_ask_show_html_images">Vis alltid bilder når du viser originale meldinger</string>
     <string name="title_ask_show_image">Å vise bilder kan lekke sensitiv informasjon</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Ingen nøkkel for %1$s</string>
     <string name="title_send_reminder_remark">Påminnelser kan aktiveres igjen i Send-innstillingene</string>
     <string name="title_send_plain_text">Bare vanlig tekst</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Be om kvittering</string>
     <string name="title_send_receipt_remark">De fleste tilbydere og e-post klienter ignorerer kvitterings forespørsler</string>
     <string name="title_from_missing">Avsender mangler</string>

app/src/main/res/values-pl-rPL/strings.xml

@@ -792,6 +792,7 @@
     <string name="title_reply_to_all">Odpowiedz wszystkim</string>
     <string name="title_reply_list">Odpowiedz do listy</string>
     <string name="title_reply_receipt">Wyślij potwierdzenie odczytu</string>
+    <string name="title_reply_address_unknown">Zgłoś „adres nieznany”</string>
     <string name="title_reply_template">Odpowiedz z szablonem</string>
     <string name="title_move_undo">Przenoszę do %1$s (%2$d)</string>
     <string name="title_open_with">Otwórz za pomocą</string>
@@ -827,7 +828,7 @@
     <string name="title_ask_delete_rule">Usunąć regułę bezpowrotnie?</string>
     <string name="title_ask_discard">Odrzucić szkic?</string>
     <string name="title_ask_show_html">Pokazywanie oryginalnej wiadomości może spowodować wyciek wrażliwych informacji</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Użyj ciemnego motywu</string>
     <string name="title_ask_show_html_remark">Wyświetlanie oryginalnej wiadomości na ciemnym tle nie jest możliwe, ponieważ może to powodować brak widoczności ciemnych tekstów i obrazów</string>
     <string name="title_ask_show_html_images">Zawsze pokazuj obrazy przy wyświetlaniu oryginalnych wiadomości</string>
     <string name="title_ask_show_image">Pokazywanie obrazów może spowodować wyciek wrażliwych informacji</string>
@@ -925,6 +926,7 @@
     <string name="title_key_missing">Brak klucza dla %1$s</string>
     <string name="title_send_reminder_remark">Przypomnienia można włączyć ponownie w ustawieniach wysyłania</string>
     <string name="title_send_plain_text">Tylko zwykły tekst</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Poproś o potwierdzenie</string>
     <string name="title_send_receipt_remark">Większość dostawców i klientów e-mail ignoruje prośby o potwierdzenie</string>
     <string name="title_from_missing">Brak nadawcy</string>

app/src/main/res/values-pt-rBR/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Responder a todos</string>
     <string name="title_reply_list">Responder à lista</string>
     <string name="title_reply_receipt">Enviar confirmação de leitura</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Modelo de resposta</string>
     <string name="title_move_undo">Movendo para %1$s (%2$d)</string>
     <string name="title_open_with">Abrir com</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Excluir regra permanentemente?</string>
     <string name="title_ask_discard">Descartar rascunho?</string>
     <string name="title_ask_show_html">Mostrar a mensagem original pode vazar informações confidenciais de privacidade</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Não é possível exibir a mensagem original com um fundo escuro porque textos e imagens escuros podem ficar invisíveis</string>
     <string name="title_ask_show_html_images">Sempre mostrar imagens nas mensagens originais</string>
     <string name="title_ask_show_image">Mostrar imagens pode vazar informações sensíveis à privacidade</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">Nenhuma chave para %1$s</string>
     <string name="title_send_reminder_remark">Os lembretes podem ser ativados novamente nas configurações de envio</string>
     <string name="title_send_plain_text">Somente texto simples</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Solicitar recibo</string>
     <string name="title_send_receipt_remark">A maioria dos provedores e clientes de e-mail ignoram as solicitações de confirmação</string>
     <string name="title_from_missing">Remetente faltante</string>

app/src/main/res/values-pt-rPT/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-ro-rRO/strings.xml

@@ -782,6 +782,7 @@
     <string name="title_reply_to_all">Răspunde tuturor</string>
     <string name="title_reply_list">Răspunde listei</string>
     <string name="title_reply_receipt">Trimite confirmare de citire</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Răspunde cu șablon</string>
     <string name="title_move_undo">Se mută la %1$s (%2$d)</string>
     <string name="title_open_with">Deschide cu</string>
@@ -817,7 +818,7 @@
     <string name="title_ask_delete_rule">Ștergeți regula definitiv?</string>
     <string name="title_ask_discard">Renunțați la ciornă?</string>
     <string name="title_ask_show_html">Vizualizarea mesajului original poate duce la divulgarea de informații confidențiale</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Afișarea mesajului original pe un fundal închis nu este posibilă pentru că imaginile și textul închise la culoare ar putea sa nu se vadă</string>
     <string name="title_ask_show_html_images">Arată mereu imaginile când se arată mesajele originale</string>
     <string name="title_ask_show_image">Vizualizarea imaginilor poate duce la divulgarea de informații confidențiale</string>
@@ -915,6 +916,7 @@
     <string name="title_key_missing">Nici o cheie pentru %1$s</string>
     <string name="title_send_reminder_remark">Memento-urile pot fi activate din nou în setările de trimitere</string>
     <string name="title_send_plain_text">Doar text simplu</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Solicitare confirmare</string>
     <string name="title_send_receipt_remark">Majoritatea furnizorilor și clienților de email ignoră cererile de confirmare</string>
     <string name="title_from_missing">Expeditor lipsă</string>

app/src/main/res/values-ru-rRU/strings.xml

@@ -793,6 +793,7 @@
     <string name="title_reply_to_all">Ответить всем</string>
     <string name="title_reply_list">Ответить в рассылку</string>
     <string name="title_reply_receipt">Отправить квитанцию о прочтении</string>
+    <string name="title_reply_address_unknown">Отправить сообщение \'адресе неизвестен\'</string>
     <string name="title_reply_template">Ответить с шаблоном</string>
     <string name="title_move_undo">Перемещение в %1$s (%2$d)</string>
     <string name="title_open_with">Открыть с помощью</string>
@@ -828,7 +829,7 @@
     <string name="title_ask_delete_rule">Удалить правило навсегда?</string>
     <string name="title_ask_discard">Удалить черновик?</string>
     <string name="title_ask_show_html">Отображение исходного сообщения может привести к утечке конфиденциальной информации</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Использовать тёмную тему</string>
+    <string name="title_ask_show_html_dark">Использовать тёмную тему</string>
     <string name="title_ask_show_html_remark">Отображение исходного сообщения с тёмным фоном невозможно, потому что это может привести к сокрытию тёмного текста и изображений</string>
     <string name="title_ask_show_html_images">Всегда показывать изображения при показе оригинальных сообщений</string>
     <string name="title_ask_show_image">Отображение изображений может привести к утечке конфиденциальной информации</string>
@@ -926,6 +927,7 @@
     <string name="title_key_missing">Нет ключа для %1$s</string>
     <string name="title_send_reminder_remark">Напоминания можно повторно включить в настройках отправки</string>
     <string name="title_send_plain_text">Только простой текст</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Запросить уведомление</string>
     <string name="title_send_receipt_remark">Большинство провайдеров и клиентов электронной почты игнорируют запросы о доставке</string>
     <string name="title_from_missing">Отсутствует отправитель</string>

app/src/main/res/values-si-rLK/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-sk-rSK/strings.xml

@@ -792,6 +792,7 @@ Nastavenie vždy toto kompenzuje neustálym sledovaním zmien.</string>
     <string name="title_reply_to_all">Odpovedať všetkým</string>
     <string name="title_reply_list">Odpovedať zoznamu</string>
     <string name="title_reply_receipt">Poslať potvrdenie o prečítaní</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Odpovedať šablónou</string>
     <string name="title_move_undo">Presunúť do %1$s (%2$d)</string>
     <string name="title_open_with">Otvoriť použitím</string>
@@ -827,7 +828,7 @@ Nastavenie vždy toto kompenzuje neustálym sledovaním zmien.</string>
     <string name="title_ask_delete_rule">Natrvalo odstrániť pravidlo?</string>
     <string name="title_ask_discard">Zahodiť koncept?</string>
     <string name="title_ask_show_html">Zobrazením pôvodnej správy môže dojsť k úniku citlivých informácií</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Pôvodnú správu nie je možné zobraziť na tmavom pozadí, pretože tmavý text a obrázky nemusia byť dostatočne viditeľné</string>
     <string name="title_ask_show_html_images">Vždy zobraziť obrázky pri zobrazení pôvodných správ</string>
     <string name="title_ask_show_image">Zobrazením obrázkov môže dojsť k úniku citlivých informácií</string>
@@ -925,6 +926,7 @@ Nastavenie vždy toto kompenzuje neustálym sledovaním zmien.</string>
     <string name="title_key_missing">Žiadny kľúč pre %1$s</string>
     <string name="title_send_reminder_remark">Pripomienky môžu byť znova zapnuté v nastavení posielania správ</string>
     <string name="title_send_plain_text">Len obyčajný text</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Vyžiadať potvrdenie</string>
     <string name="title_send_receipt_remark">Väčšina poskytovateľov a emailových klientov ignoruje požiadavky o potvrdenie</string>
     <string name="title_from_missing">Chýbajúci odosielateľ</string>

app/src/main/res/values-sl-rSI/strings.xml

@@ -793,6 +793,7 @@
     <string name="title_reply_to_all">Odgovori vsem</string>
     <string name="title_reply_list">Odgovori seznamu</string>
     <string name="title_reply_receipt">Pošlji potrdilo o branju</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Odgovori s predlogo</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Odpri s/z</string>
@@ -828,7 +829,7 @@
     <string name="title_ask_delete_rule">Trajno izbriši pravilo?</string>
     <string name="title_ask_discard">Zavrzi osnutek?</string>
     <string name="title_ask_show_html">Prikaz izvirnega sporočila lahko razkrije občutljive zasebne podatke.</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Izvirnega sporočila ni mogoče prikazati s temnim ozadjem, ker lahko povzroči nevidna temna besedila in slike.</string>
     <string name="title_ask_show_html_images">Vedno prikaži slike ob prikazu izvirnih sporočil</string>
     <string name="title_ask_show_image">Prikaz slik lahko razkrije občutljive zasebne podatke.</string>
@@ -926,6 +927,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Samo golo besedilo</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Zahtevaj potrdilo</string>
     <string name="title_send_receipt_remark">Večina ponudnikov in e-poštnih odjemalcev prezre zahteve za potrdilo.</string>
     <string name="title_from_missing">Manjka pošiljatelj.</string>

app/src/main/res/values-sr-rSP/strings.xml

@@ -782,6 +782,7 @@
     <string name="title_reply_to_all">Одговори свима</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Отворите помоћу</string>
@@ -817,7 +818,7 @@
     <string name="title_ask_delete_rule">Обрисати правило трајно?</string>
     <string name="title_ask_discard">Одбаци нацрт?</string>
     <string name="title_ask_show_html">Приватне осетљиве информације могу да исцуре приказивањем оригиналне поруке</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Приказивање оригиналне поруке са тамном позадином није могуће јер може да изазове да се не види тамни текст и слике</string>
     <string name="title_ask_show_html_images">Увек прикажи слике при приказивању оригиналне поруке</string>
     <string name="title_ask_show_image">Приватне осетљиве информације могу да исцуре приказивањем слика</string>
@@ -915,6 +916,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Само обични текст</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Већина провајдера и е-мејл клијената игноришу потврде о пријему</string>
     <string name="title_from_missing">Недостаје пошиљалац</string>

app/src/main/res/values-sv-rSE/strings.xml

@@ -770,6 +770,7 @@
     <string name="title_reply_to_all">Svara till alla</string>
     <string name="title_reply_list">Svara på listan</string>
     <string name="title_reply_receipt">Skicka läskvitto</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Svara med mall</string>
     <string name="title_move_undo">Flyttar till %1$s (%2$d)</string>
     <string name="title_open_with">Öppna med</string>
@@ -805,7 +806,7 @@
     <string name="title_ask_delete_rule">Ta bort regel permanent?</string>
     <string name="title_ask_discard">Släng utkastet?</string>
     <string name="title_ask_show_html">Att visa det ursprungliga meddelandet kan läcka sekretesskänslig information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Att visa originalmeddelandet med en mörk bakgrund är inte möjligt eftersom det kan orsaka osynliga mörka texter och bilder</string>
     <string name="title_ask_show_html_images">Visa alltid bilder när originalmeddelanden visas</string>
     <string name="title_ask_show_image">Att visa bilder kan läcka sekretesskänslig information</string>
@@ -903,6 +904,7 @@
     <string name="title_key_missing">Ingen nyckel för %1$s</string>
     <string name="title_send_reminder_remark">Påminnelser kan aktiveras igen i sändningsinställningarna</string>
     <string name="title_send_plain_text">Endast oformaterad text</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Begär läskvitto</string>
     <string name="title_send_receipt_remark">De flesta leverantörer och e-postklienter ignorerar kvittonförfrågningar</string>
     <string name="title_from_missing">Avsändaren saknas</string>

app/src/main/res/values-ta-rIN/strings.xml

@@ -771,6 +771,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -806,7 +807,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -904,6 +905,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-tr-rTR/strings.xml

@@ -770,6 +770,7 @@
     <string name="title_reply_to_all">Tümünü yanıtla</string>
     <string name="title_reply_list">Listeyi yanıtla</string>
     <string name="title_reply_receipt">Okundu bilgisi gönder</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Şablonla yanıtla</string>
     <string name="title_move_undo">%1$s\'a taşınıyor (%2$d)</string>
     <string name="title_open_with">Birlikte aç</string>
@@ -805,7 +806,7 @@
     <string name="title_ask_delete_rule">Kural kalıcı olarak silinsin mi?</string>
     <string name="title_ask_discard">Taslak silinsin mi?</string>
     <string name="title_ask_show_html">Özgün iletiyi göstermek gizliliğe duyarlı bilgilerin sızmasına neden olabilir</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Orijinal mesajı koyu arka planda görüntülemek mümkün değildir çünkü görünmez koyu metinlere ve resimlere neden olabilir</string>
     <string name="title_ask_show_html_images">Orijinal mesajları görüntülerken her zaman resimleri göster</string>
     <string name="title_ask_show_image">Resimlerin gösterilmesi gizliliğe duyarlı bilgilerin sızmasına neden olabilir</string>
@@ -903,6 +904,7 @@
     <string name="title_key_missing">%1$s için anahtar yok</string>
     <string name="title_send_reminder_remark">Hatırlatıcılar gönderme ayarları üzerinden tekrar etkinleştirilebilir</string>
     <string name="title_send_plain_text">Yalnızca düz metin</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Çoğu sağlayıcı ve e-posta istemcisi alındı isteklerini yok saymaktadır</string>
     <string name="title_from_missing">Gönderici Eksik</string>

app/src/main/res/values-uk-rUA/strings.xml

@@ -793,6 +793,7 @@
     <string name="title_reply_to_all">Відповісти всім</string>
     <string name="title_reply_list">Відповісти до списку</string>
     <string name="title_reply_receipt">Надіслати повідомлення про перегляд</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Відповісти з шаблоном</string>
     <string name="title_move_undo">Переміщення до %1$s (%2$d)</string>
     <string name="title_open_with">Відкрити за допомогою</string>
@@ -828,7 +829,7 @@
     <string name="title_ask_delete_rule">Видалити правило остаточно?</string>
     <string name="title_ask_discard">Відхилити чернетку?</string>
     <string name="title_ask_show_html">Показ оригінального повідомлення може призвести до витоку конфіденційної інформації</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Використовувати темну тему</string>
+    <string name="title_ask_show_html_dark">Використовувати темну тему</string>
     <string name="title_ask_show_html_remark">Показ оригінального повідомлення на темному тлі неможливе, оскільки воно може зробити темні тексти та зображення невидимими</string>
     <string name="title_ask_show_html_images">Завжди показувати зображення при показі оригінальних повідомлень</string>
     <string name="title_ask_show_image">Показ зображень може призвести до витоку конфіденційної інформації</string>
@@ -926,6 +927,7 @@
     <string name="title_key_missing">Немає ключа для %1$s</string>
     <string name="title_send_reminder_remark">Нагадування можуть знову бути увімкнені в налаштуваннях для надсилання</string>
     <string name="title_send_plain_text">Тільки звичайний текст</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Запит підтвердження отримання</string>
     <string name="title_send_receipt_remark">Більшість постачальників та email клієнтів ігнорують запити на отримання</string>
     <string name="title_from_missing">Відсутній відправник</string>

app/src/main/res/values-vi-rVN/strings.xml

@@ -760,6 +760,7 @@
     <string name="title_reply_to_all">Reply to all</string>
     <string name="title_reply_list">Reply to list</string>
     <string name="title_reply_receipt">Send read receipt</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">Reply with template</string>
     <string name="title_move_undo">Moving to %1$s (%2$d)</string>
     <string name="title_open_with">Open with</string>
@@ -795,7 +796,7 @@
     <string name="title_ask_delete_rule">Delete rule permanently?</string>
     <string name="title_ask_discard">Discard draft?</string>
     <string name="title_ask_show_html">Showing the original message can leak privacy sensitive information</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">Displaying the original message on a dark background is not possible as it may make dark texts and images invisible</string>
     <string name="title_ask_show_html_images">Always show images on showing original messages</string>
     <string name="title_ask_show_image">Showing images can leak privacy sensitive information</string>
@@ -893,6 +894,7 @@
     <string name="title_key_missing">No key for %1$s</string>
     <string name="title_send_reminder_remark">Reminders can be enabled again in the send settings</string>
     <string name="title_send_plain_text">Plain text only</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">Request receipt</string>
     <string name="title_send_receipt_remark">Most providers and email clients ignore receipt requests</string>
     <string name="title_from_missing">Sender missing</string>

app/src/main/res/values-zh-rCN/strings.xml

@@ -759,6 +759,7 @@
     <string name="title_reply_to_all">回复全部</string>
     <string name="title_reply_list">回复列表</string>
     <string name="title_reply_receipt">发送已读回执</string>
+    <string name="title_reply_address_unknown">报告 \'地址未知\'</string>
     <string name="title_reply_template">使用模板回复</string>
     <string name="title_move_undo">正移动到 %1$s(%2$d)</string>
     <string name="title_open_with">打开方式</string>
@@ -794,7 +795,7 @@
     <string name="title_ask_delete_rule">是否永久删除规则？</string>
     <string name="title_ask_discard">丢弃草稿？</string>
     <string name="title_ask_show_html">显示原件可能会泄露隐私敏感信息</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">使用深色主题</string>
+    <string name="title_ask_show_html_dark">使用深色主题</string>
     <string name="title_ask_show_html_remark">无法在暗色背景下显示原始消息，因为会导致看不见的黑色文本和图像</string>
     <string name="title_ask_show_html_images">在显示原始消息时总是显示图像</string>
     <string name="title_ask_show_image">显示图像可能会泄露隐私敏感信息</string>
@@ -892,6 +893,7 @@
     <string name="title_key_missing">没有 %1$s 的密钥</string>
     <string name="title_send_reminder_remark">在发送设置中可以再次启用提醒</string>
     <string name="title_send_plain_text">仅纯文本</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">请求回执</string>
     <string name="title_send_receipt_remark">大多数供应商和电子邮件客户都忽略回执请求</string>
     <string name="title_from_missing">缺少发件人</string>

app/src/main/res/values-zh-rTW/strings.xml

@@ -758,6 +758,7 @@
     <string name="title_reply_to_all">回復全部</string>
     <string name="title_reply_list">回覆清單</string>
     <string name="title_reply_receipt">發送已讀回執</string>
+    <string name="title_reply_address_unknown">Report \'address unknown\'</string>
     <string name="title_reply_template">回复模板</string>
     <string name="title_move_undo">移動到 %1$s (%2$d)</string>
     <string name="title_open_with">打開用</string>
@@ -793,7 +794,7 @@
     <string name="title_ask_delete_rule">永久刪除規則？</string>
     <string name="title_ask_discard">捨棄草稿？</string>
     <string name="title_ask_show_html">顯示原始消息可能會洩露隱私敏感信息</string>
-    <string name="title_ask_show_html_dark" comment="title_ask_show_html_dark&#10;Title for checkbox to display original messages with a dark theme">Use dark theme</string>
+    <string name="title_ask_show_html_dark">Use dark theme</string>
     <string name="title_ask_show_html_remark">無法在深色背景上顯示原始消息，因為這可能會使深色文本和圖像不可見</string>
     <string name="title_ask_show_html_images">在顯示原始消息時始終顯示圖像</string>
     <string name="title_ask_show_image">顯示圖像可能會洩露隱私敏感信息</string>
@@ -890,6 +891,7 @@
     <string name="title_key_missing">沒有鑰匙給 %1$s</string>
     <string name="title_send_reminder_remark">可以在發送設置中再次啟用提醒</string>
     <string name="title_send_plain_text">僅純文本</string>
+    <string name="title_send_dsn" comment="title_send_dsn&#10;Title for delivery/disposition notifications&#10;(receipts and 'address unknown' messages)">Status report</string>
     <string name="title_send_receipt">索取收據</string>
     <string name="title_send_receipt_remark">大多數提供商和電子郵件客戶端都會忽略收據請求</string>
     <string name="title_from_missing">遺失寄件人</string>

docs/FAQ-af-rZA.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-ar-rBH.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-ar-rEG.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-ar-rYE.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-az-rAZ.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-bg-rBG.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-bn-rBD.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-bn-rIN.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-ca-rES.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-cs-rCZ.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-da-rDK.md

@@ -922,7 +922,8 @@ SMTP-servere kan [af forskellige årsager](https://en.wikipedia.org/wiki/List_of
 * *503 5.5.0 Modtager allerede angivet* betyder typisk, at en adresse bruges som både TO- og CC-adresse
 * *554 5.7.1 ... ikke tilladt at videresende* betyder, at e-mailserveren ikke genkender brugernavnet/e-mailadressen. Dobbelttjek værtsnavn og brugernavn/e-mailadresse i identitetsindstillingerne.
 * *550 Spam besked afvist, da IP er listet af ...* betyder, at e-mailserveren har afvist at afsende en besked fra den aktuelle (offentlige) netværksadresse, fordi den tidligere har være misbrugt til spamafsendelse. Prøv at aktivere flytilstand i 10 minutter for at få tildelt en ny netværksadresse.
-* *571 5.7.1 Besked indeholder spam eller virus eller afsender er blokeret ...* betyder, at e-mailserveren betragtede en udgående besked som spam. Dette betyder sandsynligvis, at e-mailserverens spamfiltre er for strikse. Kontakt e-mailudbyderen for support vedr. dette.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
+* *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 Ønskes Gmail SMTP-serveren brugt mhp. at omgå et for strikst, udgående spamfilter eller til at forbedre beskedlevering:
 
@@ -1086,19 +1087,21 @@ Der findes genveje til oprettelse af en ny besked til en favoritkontakt.
 
 Genveje kræver Android 7.1 Nougat eller senere. Brug af genveje forklares [hér](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
-**(32) Hvordan tjekkes, om læsning af e-mails virkelig er sikkert?**
+**(32) How can I check if reading email is really safe?**
 
-Man kan benytte [E-mail Fortrolighedstester](https://www.emailprivacytester.com/) til dette.
+You can use the [Email Privacy Tester](https://www.emailprivacytester.com/) for this.
 
 <br />
 
 <a name="faq33"></a>
-**(33) Hvorfor fungerer redigerede afsenderadresser ikke?**
+**(33) Why are edited sender addresses not working?**
 
-For at forhindre spam ifm. afsendelser accepterer de fleste udbydere kun bekræftede adresser.
+Most providers accept validated addresses only when sending messages to prevent spam.
 
 For example Google modifies the message headers like this for *unverified* addresses:
 
@@ -1107,70 +1110,70 @@ Fra: Nogen <somebody@example.org>
 X-Google-Originale-Fra: Nogen <somebody+extra@example.org>
 ```
 
-Det betyder, at den redigerede afsenderadresse automatisk erstattes af en bekræftet adresse inden bekedafsendelsen.
+This means that the edited sender address was automatically replaced by a verified address before sending the message.
 
-Bemærk, at dette er uafhængigt af at modtage beskeder.
+Note that this is independent of receiving messages.
 
 <br />
 
 <a name="faq34"></a>
-**(34) Hvordan matches identiteter?**
+**(34) How are identities matched?**
 
-Identiteter matches efter konto. For indgående beskeder tjekkes adresserne *til*, *cc*, *bcc*, *fra* og *(X-)leverede/konvolut/originale-til* (i nævnte rækkefølge) og for udgående beskeder (kladder, udbakke og sendt) tjekkes kun *fra*-adresserne. Identiske adresser har forrang frem for delvist matchende ditto, undtagen for *leveret til*-adresser.
+Identities are as expected matched by account. For incoming messages the *to*, *cc*, *bcc*, *from* and *(X-)delivered/envelope/original-to* addresses will be checked (in this order) and for outgoing messages (drafts, outbox and sent) only the *from* addresses will be checked. Equal addresses have precedence over partially matching addresses, except for *delivered-to* addresses.
 
-Den matchede adresse vil blive vist som *via* i adresseafsnittet for modtagne beskeder (mellem besked-header og -brødtekst).
+The matched address will be shown as *via* in the addresses section of received messages (between the message header and message text).
 
-Bemærk, at identiteter skal aktiveres for at kunne matches, samt at identiteter for andre konti ikke medtages.
+Note that identities needs to be enabled to be able to be matched and that identities of other accounts will not be considered.
 
-Matchning udføres kun én gang efter modtagelse af en besked, så eksisterende beskeder påvirkes ikke af opsætningsændringer. Lokale beskeder kan dog ryddes vha. langt tryk på en mappe i mappelisten og dernæst synke beskeder igen.
+Matching will be done only once on receiving a message, so changing the configuration will not change existing messages. You could clear local messages by long pressing a folder in the folder list and synchronize the messages again though.
 
-Det er muligt at opsætte et [regex](https://en.wikipedia.org/wiki/Regular_expression) i identitetsindstillingerne for at få en e-mailadresses (delen før @-tegnet) matchende **brugernavn**.
+It is possible to configure a [regex](https://en.wikipedia.org/wiki/Regular_expression) in the identity settings to match **the username** of an email address (the part before the @ sign).
 
-Bemærk, at domænenavnet (tekst/tegn efter @) altid skal være identisk med identitetens domænenavn.
+Note that the domain name (the parts after the @ sign) always needs to be equal to the domain name of the identity.
 
-Ønskes en fang-alle e-mailadresse matchet, er dette regex for det meste OK:
+If you like to match a catch-all email address, this regex is mostly okay:
 
 ```
 .*
 ```
 
-Ønskes matchning af e-mailadresserne til specielle formål, abc@eksemepel.dk og xyx@eksemepel.dk, tillige med fallback e-mailadressen hoved@eksemepel.dk, kan noget ala dette gøres:
+If you like to match the special purpose email addresses abc@example.com and xyx@example.com and like to have a fallback email address main@example.com as well, you could do something like this:
 
 * Identity: abc@eksempel.dk; regex: **(?i)abc**
 * Identity: xyz@eksempel.dk; regex: **(?i)xyz**
 * Identity: hoved@eskempel.dk; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matchede identiteter kan benyttes til beskedfarvekodning. Identitetsfarven har forrang over kontofarven. Brug af identitetsfarver er en Pro-funktion.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
 <a name="faq35"></a>
-**(35) Hvorfor skal man være forsigtig med at få vist billeder, vedhæftninger, originalbeskeder samt åbne links?**
+**(35) Why should I be careful with viewing images, attachments, the original message, and opening links?**
 
-Visning af fjernlagrede billeder (tjek også [denne FAQ](#user-content-faq27)) og åbning af links fortæller muligvis ikke kun afsenderen, at beskeden er set, men lækker også ens IP-adresse. Tjek også dette spørgsmål: [Derfor et e-mail link er farligere end et websøgningslink](https://security.stackexchange.com/questions/241139/why-emails-link-is-more-dangerous-than-web-searchs-link).
+Viewing remotely stored images (see also [this FAQ](#user-content-faq27)) and opening links might not only tell the sender that you have seen the message, but will also leak your IP address. See also this question: [Why email's link is more dangerous than web search's link?](https://security.stackexchange.com/questions/241139/why-emails-link-is-more-dangerous-than-web-searchs-link).
 
-Åbning af vedhæftninger eller kigning af en original besked kan muligvis indlæse eksternt indhold og eksekvere scripts, hvilket, udover at forårsage læk af fortrolige informationer, kan udgøre en sikkerhedsrisiko.
+Opening attachments or viewing an original message might load remote content and execute scripts, that might not only cause privacy sensitive information to leak, but can also be a security risk.
 
-Bemærk, at kontakter, uden deres vidende, kan sende ondsindede beskeder i tilfælde af malware-inficering.
+Note that your contacts could unknowingly send malicious messages if they got infected with malware.
 
-FairEmail genformaterer beskeder, hvilket ændrer deres udseende ift. originalen, men samtidig også afslører phishing-links.
+FairEmail formats messages again causing messages to look different from the original, but also uncovering phishing links.
 
-Bemærk, at genformaterede beskeder ofte er mere læsbare end originalerne, da margerne er fjernet, og skrifttypefarver og -størrelser er standardiserede.
+Note that reformatted messages are often better readable than original messages because the margins are removed, and font colors and sizes are standardized.
 
-Gmail-appen viser som standard billeder ved at downloade disse via en Google-proxyserver. Da billeder downloades fra kildeserveren [i realtid](https://blog.filippo.io/how-the-new-gmail-image-proxy-works-and-what-this-means-for-you/), er dette endnu mindre sikkert, da Google, uden nogen større fordel, også er involveret.
+The Gmail app shows images by default by downloading the images through a Google proxy server. Since the images are downloaded from the source server [in real-time](https://blog.filippo.io/how-the-new-gmail-image-proxy-works-and-what-this-means-for-you/), this is even less secure because Google is involved too without providing much benefit.
 
-Billeder og originalbeskeder kan som standard vises for betroede afsendere fra gang til gang ved at markere *Spørg ikke igen om ...*.
+You can show images and original messages by default for trusted senders on a case-by-case basis by checking *Do not ask this again for ...*.
 
-For nulstilling af standarden *Åbn med* apps, tjek [hér](https://www.androidauthority.com/how-to-set-default-apps-android-clear-621269/).
+If you want to reset the default *Open with* apps, please [see here](https://www.androidauthority.com/how-to-set-default-apps-android-clear-621269/).
 
 <br />
 
 <a name="faq36"></a>
-**(36) Hvordan krypteres indstillingsfiler?**
+**(36) How are settings files encrypted?**
 
-Kort version: AES 256 bit
+Short version: AES 256 bit
 
-Lang version:
+Long version:
 
 * 256 bit nøglen genereres med *PBKDF2WithHmacSHA1* vha. en 128 bit, sikker tilfældigt salt samt 65.536 iterationer
 * Cipher'en er *AES/CBC/PKCS5Padding*
@@ -1178,114 +1181,114 @@ Lang version:
 <br />
 
 <a name="faq37"></a>
-**(37) Hvordan lagres adgangskoder?**
+**(37) How are passwords stored?**
 
-Alle understøttede Android-versioner [krypterer alle brugerdata](https://source.android.com/security/encryption), så disse, inkl. brugernavne, adgangskoder, beskeder mv., lagres krypteret.
+All supported Android versions [encrypt all user data](https://source.android.com/security/encryption), so all data, including usernames, passwords, messages, etc, is stored encrypted.
 
-Er enheden sikret med en PIN-kode, mønster eller adgangskode, kan konto- og identitetsadgangskoder gøres. synlige. Er dette et problem, da enheden f.eks. deles med andre, så overvej brug af [brugerprofiler](https://www.howtogeek.com/333484/how-to-set-up-multiple-user-profiles-on-android/).
+If the device is secured with a PIN, pattern or password, you can make the account and identity passwords visible. If this is a problem because you are sharing the device with other people, consider to use [user profiles](https://www.howtogeek.com/333484/how-to-set-up-multiple-user-profiles-on-android/).
 
 <br />
 
 <a name="faq39"></a>
-**(39) Hvordan kan FairEmails batteriforbrug reduceres?**
+**(39) How can I reduce the battery usage of FairEmail?**
 
-Som standard rapporterer nyere Android-versioner *app-brug* som en procentdel på Android-batteriindstillingssiden. **Forvirrende nok er *app-brug* ikke det samme som *batteriforbrug* og er ikke engang direkte relateret til hertil!** App-brugen (under brug) vil være meget høj, da FairEmail bruger en forgrundstjeneste, hvilket af Android betragtes som konstant app-brug. Dette betyder dog ikke, at FairEmail konstant forbruger strøm. Det reelle stømforbrug kan ses ved at gå til denne skærm:
+Recent Android versions by default report *app usage* as a percentage in the Android battery settings screen. **Confusingly, *app usage* is not the same as *battery usage* and is not even directly related to battery usage!** The app usage (while in use) will be very high because FairEmail is using a foreground service which is considered as constant app usage by Android. However, this doesn't mean that FairEmail is constantly using battery power. The real battery usage can be seen by navigating to this screen:
 
-*Android-indstillinger*, *Batteri*, trepriksmenu *Batteriforbrug*, trepriksmenu *Vis fuld enhedsbrug*
+*Android settings*, *Battery*, three-dots menu *Battery usage*, three-dots menu *Show full device usage*
 
-Som en tommelfingerregel bør strømforbruget være under, eller i hvert fald ikke meget højere end for *Mobilnetværks-standby*. Er dette ikke tilfældet, så aktivé *Automatisk optimering* i modtagelsesindstillingerne. Hjælper dette ikke, så [anmod om support](https://contact.faircode.eu/?product=fairemailsupport).
+As a rule of thumb the battery usage should be below or in any case not be much higher than *Mobile network standby*. If this isn't the case, please turn on *Auto optimize* in the receive settings. If this doesn't help, please [ask for support](https://contact.faircode.eu/?product=fairemailsupport).
 
-Det er uundgåeligt, at besked-synkning forbruger strøm, da dette involverer adgang til både netværk og beskeddatabase.
+It is inevitable that synchronizing messages will use battery power because it requires network access and accessing the messages database.
 
-Sammenlignes batteriforbruget for FairEmail med en anden e-mailklient, skal den anden e-mailklient er opsat på lignende vis. Det er f.eks. ikke retvisende at sammenligne kontinuerlig synk (push-beskeder) og periodisk (ikke-regelmæssig) kontrol for nye beskeder.
+If you are comparing the battery usage of FairEmail with another email client, please make sure the other email client is setup similarly. For example comparing always sync (push messages) and (infrequent) periodic checking for new messages is not a fair comparison.
 
-Gentagne gentilslutninger til en e-mailserver, f.eks. grundet en ustabil Internetforbindelse, vil øge strømforbruget. Visse e-mailservere afslutter også ikke-aktive forbindelser for tidligt, selvom [standarden](https://tools.ietf.org/html/rfc2177) dikterer, at en ikke-aktiv forbindelse bør holdes åben i 29 minutter. Periodisk synk, f.eks. hver time, kan være at foretrække i sådanne tilfælde. Bemærk, at hyppig polling (udover hvert ca. 30.-60. min) antageligt vil øge strømforbruget ift. kontinuerlig synk, da både serverforbindelsesoprettelsen samt lokal-/fjernbeskedsmatchning er ressourcekrævende.
+Reconnecting to an email server will use extra battery power, so an unstable internet connection will result in extra battery usage. Also, some email servers prematurely terminate idle connections, while [the standard](https://tools.ietf.org/html/rfc2177) says that an idle connection should be kept open for 29 minutes. In these cases you might want to synchronize periodically, for example each hour, instead of continuously. Note that polling frequently (more than every 30-60 minutes) will likely use more battery power than synchronizing always because connecting to the server and comparing the local and remote messages are expensive operations.
 
-[På visse enheder](https://dontkillmyapp.com/) er det nødvendigt at *deaktivere* batterioptimering (opsætningstrin 3) for at holde e-mailserverforbindelser åbne. Faktisk kan aktiv batterioptimering resultere i ekstra strømforbrug på alle enheder, selvom det lyder selvmodsigende!
+[On some devices](https://dontkillmyapp.com/) it is necessary to *disable* battery optimizations (setup step 3) to keep connections to email servers open. In fact, leaving battery optimizations enabled can result in extra battery usage for all devices, even though this sounds contradictory!
 
-Størstedelen af strømforbruget, fraset at kigge beskeder, skyldes synk (modtagelse/afsendelse) af beskeder. For at reducere strømforbruget, så indstil antallet af synk-dage til en lavere værdi, især hvis der er en masse nye beskeder i en mappe. Langt tryk på et mappenavn i mappelisten, og valg af *Redigér egenskaber* giver adgang til denne indstilling.
+Most of the battery usage, not considering viewing messages, is due to synchronization (receiving and sending) of messages. So, to reduce the battery usage, set the number of days to synchronize message for to a lower value, especially if there are a lot of recent messages in a folder. Long press a folder name in the folders list and select *Edit properties* to access this setting.
 
-Er der Internetforbindelse mindst én gang dagligt, er det tilstrækkeligt at synke beskeder blot for én dag.
+If you have at least once a day internet connectivity, it is sufficient to synchronize messages just for one day.
 
-Bemærk, at det antal dage, hvori beskeder *beholdes* maksimalt kan indstilles til det antal dage, hvori beskeder *synkes*. Indledningsvis kan beskeder f.eks. synkes i mange dage, og efter at dette er fuldført reduces antallet af beskedsynkdage, mens antallet af dage, hvori beskeder skal beholdes, bevares. Efter reducering af det antal dage, hvori beskeder beholdes, ønsker man måske via Diverse indstillinger at køre en oprydning for at fjerne gamle filer.
+Note that you can set the number of days to *keep* messages for to a higher number than to *synchronize* messages for. You could for example initially synchronize messages for a large number of days and after this has been completed reduce the number of days to synchronize messages for, but leave the number of days to keep messages for. After decreasing the number of days to keep messages for, you might want to run the cleanup in the miscellaneous settings to remove old files.
 
-I modtagelsesindstillingerne kan man vælge altid at synke stjernemarkerede beskeder, hvilket bevarer ældre beskeder, selvom beskeder synkes i et begrænset antal dage.
+In the receive settings you can enable to always synchronize starred messages, which will allow you to keep older messages around while synchronizing messages for a limited number of days.
 
-Deaktivering af mappeindstillingen *Download automatisk beskedtekster og vedhæftninger* vil reducere netværkstrafik og dermed strømforbrug. Denne indstilling kan deaktivere for eksempelvis Sendt-mappen og arkivet.
+Disabling the folder option *Automatically download message texts and attachments* will result in less network traffic and thus less battery usage. You could disable this option for example for the sent folder and the archive.
 
-Synk af beskeder om natten er for det meste unødvendigt, så der kan spares strøm ved at undlade dette. En tidsplan for beskedsynk kan vælges i indstillingerne (bemærk, Pro-funktion).
+Synchronizing messages at night is mostly not useful, so you can save on battery usage by not synchronizing at night. In the settings you can select a schedule for message synchronization (this is a pro feature).
 
-FairEmail vil som standard synke mappelisten ved hver tilslutning. Da mapper ikke særligt ofte oprettes, omdøbes og slettes, kan der spares netværks- og strømforbrug ved at deaktivere dette i modtagelsesindstillingerne.
+FairEmail will by default synchronize the folder list on each connection. Since folders are mostly not created, renamed and deleted very often, you can save some network and battery usage by disabling this in the receive settings.
 
-Som standard vil FairEmail ved hver tilslutning tjekke, om gamle beskeder er slettet fra serveren. Har man intet imod, at gamle beskederr, som er slettet fra serveren, fortsat er synlige i FairEmail, kan der spares netværks- og strømforbrug ved at deaktivere dette i modtagelsesindstillingerne.
+FairEmail will by default check if old messages were deleted from the server on each connection. If you don't mind that old messages that were delete from the server are still visible in FairEmail, you can save some network and battery usage by disabling this in the receive settings.
 
-Visse udbydere følger ikke IMAP-standarden og holder ikke forbindelser åbne længe nok, hvilket tvinger FairEmail til at bruge mere strøm på ofte at genforbinde. Via hovednavigeringsmenuen kan *Loggen* tjekkes for at se, om der er hyppige forbindelsesgenoprettelser (forbindelse lukket/nulstillet, læse-/skrivefejl/timeout mv.). Dette kan omgås ved i de avancerede kontoindstillinger at sænke keep-alive intervallet til f.eks. 15 eller 9 min. Bemærk, at batterioptimering skal deaktiveres i opsætningstrin 3 for pålideligt at holde forbindelser i live.
+Some providers don't follow the IMAP standard and don't keep connections open long enough, forcing FairEmail to reconnect often, causing extra battery usage. You can inspect the *Log* via the main navigation menu to check if there are frequent reconnects (connection closed/reset, read/write error/timeout, etc). You can workaround this by lowering the keep-alive interval in the advanced account settings to for example 9 or 15 minutes. Note that battery optimizations need to be disabled in setup step 3 to reliably keep connections alive.
 
-Visse udbydere sender hvert 2. minut noget i retning af en '*Stadig her*',-status, hvilket resulterer i netværkstrafik, vækning af enheden og samlet set et unødigt ekstra strømforbrug. *Loggen* kan tjekkes via hovednavigeringsmenuen for at se, om den anvndte udbyder gør dette. Benytter udbyderen [Dovecot](https://www.dovecot.org/) som IMAP-server, kan denne anmodes om at ændre indstillingen [imap_idle_notify_interval](https://wiki.dovecot.org/Timeouts) til en højere værdi eller endnu bedre, deaktivere denne. Er udbyderen ikke er i stand eller villig til at ændre/deaktivere denne, så overvej at bemytte periodisk i stedet for kontinuerlig synk. Dette kan ændres i modtagelsesindstillingerne.
+Some providers send every two minutes something like '*Still here*' resulting in network traffic and your device to wake up and causing unnecessary extra battery usage. You can inspect the *Log* via the main navigation menu to check if your provider is doing this. If your provider is using [Dovecot](https://www.dovecot.org/) as IMAP server, you could ask your provider to change the [imap_idle_notify_interval](https://wiki.dovecot.org/Timeouts) setting to a higher value or better yet, to disable this. If your provider is not able or willing to change/disable this, you should consider to switch to periodically instead of continuous synchronization. You can change this in the receive settings.
 
-Ses meddelelsen *Denne udbyder understøtter ikke push-beskeder* under en kontoopsætning, så overvej et skift til en moderne udbyder med push-beskedunderstøttelse (IMAP IDLE) for at reducere strømforbruget.
+If you got the message *This provider does not support push messages* while configuring an account, consider switching to a modern provider which supports push messages (IMAP IDLE) to reduce battery usage.
 
-Har enheden [AMOLED](https://en.wikipedia.org/wiki/AMOLED)-skærm, kan et skift til sort tema spare strøm, mens der kigges beskeder.
+If your device has an [AMOLED](https://en.wikipedia.org/wiki/AMOLED) screen, you can save battery usage while viewing messages by switching to the black theme.
 
-Er autooptimering i modtagelsesindstillingerne aktiveret, skifter en konto automatisk til periodisk tjek for nye beskeder, når e-mailserveren:
+If auto optimize in the receive settings is enabled, an account will automatically be switched to periodically checking for new messages when the email server:
 
 * Sender et '*Stadig her*' inden for 3 minutter
 * Ikke understøtter push-beskeder
 * Keep-alive intervallet er kortere end 12 min
 
-Desuden vil Papirkurv- og Spam-mapperne automatisk blive indstillet til at tjekke for nye beskeder efter tre successive [for mange samtidige forbindelser](#user-content-faq23) fejl.
+In addition, the trash and spam folders will be automatically set to checking for new messages after three successive [too many simultaneous connections](#user-content-faq23) errors.
 
 <br />
 
 <a name="faq40"></a>
-**(40) Hvordan reduceres FairEmails dataforbrug?**
+**(40) How can I reduce the data usage of FairEmail?**
 
-Grundlæggende reduceres netværksforbrug på samme måde som strømforbrug. Tjek forslagene ifm. foregående spørgsmål.
+You can reduce the data usage basically in the same way as reducing battery usage, see the previous question for suggestions.
 
-Data vil uundgåeligt blive forbrugt ved beskedsynk.
+It is inevitable that data will be used to synchronize messages.
 
-Mistes forbindelsen til e-mailserveren, vil FairEmail altid gensynke beskederne for at sikre, at de alle er tilgængelige. Er forbindelsen ustabil, medfører dette typisk ekstra dataforbrug. Det er i så fald en god idé at reducere antallet af beskedsynkdage til et minimum (tjek foregående spørgsmål) eller at skifte til periodisk beskedsynk (modtagelsesindstillinger).
+If the connection to the email server is lost, FairEmail will always synchronize the messages again to make sure no messages were missed. If the connection is unstable, this can result in extra data usage. In this case, it is a good idea to decrease the number of days to synchronize messages for to a minimum (see the previous question) or to switch to periodically synchronizing of messages (receive settings).
 
-For dataforbrugsreduktion, kan disse avancerede modtagelsesindstillinger ændres:
+To reduce data usage, you could change these advanced receive settings:
 
 * Tjek, om gamle beskeder er fjernet fra serveren
 * Synk (delte) mappelister: Deaktivér
 
-Som standard henter FairEmail ikke beskedtekster og vedhæftninger større end 256 KiB på en takseret Internetforbindelse (mobildata eller betalt Wi-Fi). Dette kan ændres i forbindelsesindstillingerne.
+By default FairEmail does not download message texts and attachments larger than 256 KiB when there is a metered (mobile or paid Wi-Fi) internet connection. You can change this in the connection settings.
 
 <br />
 
 <a name="faq41"></a>
-**(41) Hvordan rettes fejlen 'Handshake mislykkedes'?**
+**(41) How can I fix the error 'Handshake failed' ?**
 
-Der er flere mulige årsager, så tjek slutningen af dette svar.
+There are several possible causes, so please read to the end of this answer.
 
-Fejlen '*Handshake mislykkedes ... WRONG_VERSION_NUMBER ...*' kan betyde, at der forsøges oprettet forbindelse til en IMAP- eller SMTP-server uden forbindelseskryptering, typisk via port 143 (IMAP) og port 25 (SMTP), eller at en forkert protokol (SSL/TLS eller STARTTLS) anvendes.
+The error '*Handshake failed ... WRONG_VERSION_NUMBER ...*' might mean that you are trying to connect to an IMAP or SMTP server without an encrypted connection, typically using port 143 (IMAP) and port 25 (SMTP), or that a wrong protocol (SSL/TLS or STARTTLS) is being used.
 
-De fleste udbydere tilbyder krypterede forbindelser vha. forskellige porte, typisk port 993 (IMAP) og port 465/587 (SMTP).
+Most providers provide encrypted connections using different ports, typically port 993 (IMAP) and port 465/587 (SMTP).
 
-Understøtter udbyderen ikke forbindelseskryptering, bør denne anmodes om at muliggøre dette. Er dette ikke en mulighed, kan *Tillad usikre forbindelser* aktiveres i både de avancerede indstillinger OG konto-/identitetsindstillingerne.
+If your provider doesn't support encrypted connections, you should ask to make this possible. If this isn't an option, you could enable *Allow insecure connections* both in the advanced settings AND the account/identity settings.
 
-Tjek også [denne FAQ](#user-content-faq4).
+See also [this FAQ](#user-content-faq4).
 
-Fejlen '*Handshake mislykkedes ... SSLV3_ALERT_ILLEGAL_PARAMETER ...*' forårsages enten af en fejl i SSL-protokolimplementeringen eller ved en for kort DH-nøgle på e-mailserveren, hvilket FairEmail ikke kan kompensere for.
+Fejlen '*Handshake mislykkedes ... SSLV3_ALERT_ILLEGAL_PARAMETER ...*' is either caused by a bug in the SSL protocol implementation or by a too short DH key on the email server and can unfortunately not be fixed by FairEmail.
 
-Fejlen '*Handshake mislykkedes ... HANDSHAKE_FAILURE_ON_CLIENT_HELLO ...*' kan skyldes udbyderens fortsatte brug af RC4, der siden [Android 7](https://developer.android.com/about/versions/nougat/android-7.0-changes.html#tls-ssl) ikke længere understøttes.
+Fejlen '*Handshake mislykkedes ... HANDSHAKE_FAILURE_ON_CLIENT_HELLO ...*' might be caused by the provider still using RC4, which isn't supported since [Android 7](https://developer.android.com/about/versions/nougat/android-7.0-changes.html#tls-ssl) anymore.
 
-Fejlen '*Handshake mislykkedes ... UNSUPPORTED_PROTOCOL eller TLSV1_ALERT_PROTOCOL_VERSION ...*' kan skyldes aktivering af forbindelseshærdning i forbindelsesindstillingerne, eller at Android ikke længere understøtter ældre protokoller såsom SSLv3.
+The error '*Handshake failed ... UNSUPPORTED_PROTOCOL or TLSV1_ALERT_PROTOCOL_VERSION ...*' might be caused by enabling hardening connections in the connection settings or by Android not supporting older protocols anymore, like SSLv3.
 
-Android 8 Oreo og senere [understøtter ikke længere](https://developer.android.com/about/versions/oreo/android-8.0-changes#security-all) SSLv3. Manglende RC4- og SSLv3-understøttelse kan ikke omgås, da begge er fjernet fra Android.
+Android 8 Oreo and later [do not support](https://developer.android.com/about/versions/oreo/android-8.0-changes#security-all) SSLv3 anymore. There is no way to workaround lacking RC4 and SSLv3 support because it has completely been removed from Android (which should say something).
 
-Man kan bruge [dette websted](https://ssl-tools.net/mailservers) eller [dette websted](https://www.immuniweb.com/ssl/) til at tjekke for SSL-/TLS-problemer på e-mailservere.
+You can use [this website](https://ssl-tools.net/mailservers) or [this website](https://www.immuniweb.com/ssl/) to check for SSL/TLS problems of email servers.
 
 <br />
 
 <a name="faq42"></a>
-**(42) Kan der blive føjet en ny udbyder til listen?**
+**(42) Can you add a new provider to the list of providers?**
 
-Anvendes udbyderen af flere end blot et par brugere, så ja.
+If the provider is used by more than a few people, yes, with pleasure.
 
-Flg. oplysninger kræves:
+The following information is needed:
 
 ```
 <provider
@@ -1303,50 +1306,50 @@ Flg. oplysninger kræves:
 </provider>
 ```
 
-EFF-[skrivelser](https://www.eff.org/nl/deeplinks/2018/06/announcing-starttls-everywhere-securing-hop-hop-email-delivery): "*Derudover er der stadig ingen garanti for, at kommunikationen krypteres, selvom STARTTLS opsættes korrekt og et gyldigt certifikat anvendes.*"
+The EFF [writes](https://www.eff.org/nl/deeplinks/2018/06/announcing-starttls-everywhere-securing-hop-hop-email-delivery): "*Additionally, even if you configure STARTTLS perfectly and use a valid certificate, there’s still no guarantee your communication will be encrypted.*"
 
-Rene SSL-forbindelser er derfor foretrukne grundet større sikkerhed end [STARTTLS](https://en.wikipedia.org/wiki/Opportunistic_TLS).
+So, pure SSL connections are safer than using [STARTTLS](https://en.wikipedia.org/wiki/Opportunistic_TLS) and therefore preferred.
 
-Tjek også, at beskedmodtagelse/-afsendelse fungerer korrekt, før jeg kontaktes vedr. udbydertilføjelse.
+Please make sure receiving and sending messages works properly before contacting me to add a provider.
 
-Tjek nedenfor vedr. kontakt.
+See below about how to contact me.
 
 <br />
 
 <a name="faq43"></a>
-**(43) Kan man vise den originale ... ?**
+**(43) Can you show the original ... ?**
 
-Vis original, viser den oprindelige besked, som afsenderen har sendt den, inkl. oprindelige skrifttyper, farver, marginer mv. FairEmail ændrer på ingen måde på dette, bortset fra at anmode om [TEXT_AUTOSIZING](https://developer.android.com/reference/android/webkit/WebSettings.LayoutAlgorithm), hvilket *forsøger* at gøre en lille tekst mere læsbar.
+Show original, shows the original message as the sender has sent it, including original fonts, colors, margins, etc. FairEmail does and will not alter this in any way, except for requesting [TEXT_AUTOSIZING](https://developer.android.com/reference/android/webkit/WebSettings.LayoutAlgorithm), which will *attempt* to make small text more readable.
 
 <br />
 
 <a name="faq44"></a>
-**~~(44) Kan man få vist kontaktfotos/-identikoner i Sendt-mappen?~~**
+**~~(44) Can you show contact photos / identicons in the sent folder?~~**
 
-~~Kontaktfotos og identikoner vises altid for afsenderen, da dette er nødvendigt for samtaletråde.~~ ~~At få kontaktfotos til både afsender og modtager er ikke rigtig en mulighed, da hentning af et kontaktfoto er ressourcekrævende.~~
+~~Contact photos and identicons are always shown for the sender because this is necessary for conversation threads.~~ ~~Getting contact photos for both the sender and receiver is not really an option because getting contact photo is an expensive operation.~~
 
 <br />
 
 <a name="faq45"></a>
-**(45) Hvordan løses fejlen 'Denne nøgle er utilgængelig. Før brug af den, skal den importere som en af ens egne!' ?**
+**(45) How can I fix 'This key is not available. To use it, you must import it as one of your own!' ?**
 
-Man ser meddelelsen *Denne nøgle er ikke tilgængelig. Før brug af den, skal den importere som en af ens egne!*, når en besked forsøges dekrypteret med en offentlig nøgle. Løsning af dettee, kræver import af den private nøgle.
+You'll get the message *This key is not available. To use it, you must import it as one of your own!* when trying to decrypt a message with a public key. To fix this you'll need to import the private key.
 
 <br />
 
 <a name="faq46"></a>
-**(46) Hvorfor genindlæses beskedlisten hele tiden?**
+**(46) Why does the message list keep refreshing?**
 
-Ses en 'spinner' (aktivitetsindikator) øverst på beskedlisten, synkes mappen stadig med fjernserveren. Forløbsstatus for den aktuelle synk kan ses i mappelisten. Tjek symbolforklaringen for betydninger af ikoner og tal.
+If you see a 'spinner' at the top of the message list, the folder is still being synchronized with the remote server. You can see the progress of the synchronization in the folder list. See the legend about what the icons and numbers mean.
 
-Hastigheden på enheden og Internetforbindelsen samt antal beskedsynkdage afgør den samlede synkvarighed. Bemærk, at antal beskedsynkdage i de fleste tilfælde ikke bør opsættes til mere end én dag. Tjek også [denne FAQ](#user-content-faq39).
+The speed of your device and internet connection and the number of days to synchronize messages for determine how long synchronization will take. Note that you shouldn't set the number of days to synchronize messages for to more than one day in most cases, see also [this FAQ](#user-content-faq39).
 
 <br />
 
 <a name="faq47"></a>
-**(47) Hvordan løses fejlen 'Ingen primær konto/udkastmappe'?**
+**(47) How do I solve the error 'No primary account or no drafts folder' ?**
 
-Fejlmeddelelsen *Ingen primær konto eller udkastmappe* vises, når en besked forsøges oprettet, uden at nogen primær konto er angivet eller en udkastmappe er valgt for den primære konto. This can happen for example when you start FairEmail to compose a message from another app. FairEmail needs to know where to store the draft, so you'll need to select one account to be the primary account and/or you'll need to select a drafts folder for the primary account.
+You'll get the error message *No primary account or no drafts folder* when trying to compose a message while there is no account set to be the primary account or when there is no drafts folder selected for the primary account. This can happen for example when you start FairEmail to compose a message from another app. FairEmail needs to know where to store the draft, so you'll need to select one account to be the primary account and/or you'll need to select a drafts folder for the primary account.
 
 This can also happen when you try to reply to a message or to forward a message from an account with no drafts folder while there is no primary account or when the primary account does not have a drafts folder.
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-de-rAT.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 … nicht zur Weiterleitung zugelassen* bedeutet, dass der E-Mail-Server den Benutzernamen/E-Mail-Adresse nicht erkennen konnte. Bitte überprüfen Sie den Hostnamen, Benutzernamen und E-Mail-Adresse in den Identitätseinstellungen.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Support erhalten

docs/FAQ-de-rDE.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 … nicht zur Weiterleitung zugelassen* bedeutet, dass der E-Mail-Server den Benutzernamen/E-Mail-Adresse nicht erkennen konnte. Bitte überprüfen Sie den Hostnamen, Benutzernamen und E-Mail-Adresse in den Identitätseinstellungen.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Support erhalten

docs/FAQ-de-rLI.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 … nicht zur Weiterleitung zugelassen* bedeutet, dass der E-Mail-Server den Benutzernamen/E-Mail-Adresse nicht erkennen konnte. Bitte überprüfen Sie den Hostnamen, Benutzernamen und E-Mail-Adresse in den Identitätseinstellungen.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Support erhalten

docs/FAQ-el-rGR.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-en-rGB.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-es-rES.md

@@ -714,9 +714,9 @@ Buscar a través de un gran número de mensajes en el dispositivo no es muy ráp
 
 Esto significa que la búsqueda de un texto de mensaje requiere que los archivos que contengan los textos del mensaje deban abrirse uno por uno para comprobar si el texto buscado está contenido en el archivo, que es un proceso relativamente costoso.
 
-En la *configuración miscelánea* puede habilitar *Construir índice de búsqueda* para aumentar significativamente la velocidad de búsqueda en el dispositivo, pero tenga en cuenta que esto aumentará el uso de la batería y el espacio de almacenamiento. El índice de búsqueda se basa en palabras, por lo que no es posible buscar texto parcial. La búsqueda usando el índice de búsqueda es por defecto Y, así que buscar *manzana naranja* buscará manzana Y naranja. Las palabras separadas por comas resultan en la búsqueda de O, así que por ejemplo *manzana, naranja* buscará manzana O naranja. Ambos se pueden combinar, así que buscar *manzana, naranja banana* buscará manzana O (naranja Y banana). Using the search index is a pro feature.
+En la *configuración miscelánea* puede habilitar *Construir índice de búsqueda* para aumentar significativamente la velocidad de búsqueda en el dispositivo, pero tenga en cuenta que esto aumentará el uso de la batería y el espacio de almacenamiento. El índice de búsqueda se basa en palabras, por lo que no es posible buscar texto parcial. La búsqueda usando el índice de búsqueda es por defecto Y, así que buscar *manzana naranja* buscará manzana Y naranja. Las palabras separadas por comas resultan en la búsqueda de O, así que por ejemplo *manzana, naranja* buscará manzana O naranja. Ambos se pueden combinar, así que buscar *manzana, naranja banana* buscará manzana O (naranja Y banana). Usar el índice de búsqueda es una característica pro.
 
-From version 1.1315 it is possible to use search expressions like this:
+Desde la versión 1.1315 es posible utilizar expresiones de búsqueda como esta:
 
 ```
 manzana +banana -cereza ?nueces
@@ -922,7 +922,8 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Destinatario ya especificado* significa principalmente que una dirección está siendo utilizada como dirección A y CC
 * *554 5.7.1 ... no se permite transmitir* significa que el servidor de correo electrónico no reconoce el nombre de usuario/dirección de correo electrónico. Por favor, compruebe el nombre de host y el nombre de usuario/dirección de correo electrónico en la configuración de identidad.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
-* *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. Necesitará contactar al proveedor de correo electrónico para obtener ayuda al respecto.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
+* *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
 
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -1908,7 +1911,7 @@ If the account authorization has expired, you will have to select the account ag
 <a name="faq88"></a>
 **(88) How can I use a Yahoo, AOL or Sky account?**
 
-La forma preferida de configurar una cuenta Yahoo es utilizando el asistente de configuración rápida, que usará OAuth en lugar de una contraseña y por lo tanto es más seguro (y más fácil también).
+The preferred way to set up a Yahoo account is by using the quick setup wizard, which will use OAuth instead of a password and is therefore safer (and easier as well).
 
 To authorize a Yahoo, AOL, or Sky account you will need to create an app password. For instructions, please see here:
 
@@ -2191,9 +2194,9 @@ Disabling *Partial fetch* will result in more memory usage.
 <a name="faq111"></a>
 **(111) Is OAuth supported?**
 
-OAuth para Gmail es compatible a través del asistente de configuración rápida. The Android account manager will be used to fetch and refresh OAuth tokens for selected on-device accounts. OAuth for non on-device accounts is not supported because Google requires a [yearly security audit](https://support.google.com/cloud/answer/9110914) ($15,000 to $75,000) for this. You can read more about this [here](https://www.theregister.com/2019/02/11/google_gmail_developer/).
+OAuth for Gmail is supported via the quick setup wizard. The Android account manager will be used to fetch and refresh OAuth tokens for selected on-device accounts. OAuth for non on-device accounts is not supported because Google requires a [yearly security audit](https://support.google.com/cloud/answer/9110914) ($15,000 to $75,000) for this. You can read more about this [here](https://www.theregister.com/2019/02/11/google_gmail_developer/).
 
-El asistente de configuración rápida soporta OAuth para Yandex y Yahoo.
+OAuth for Yandex and Yahoo is supported via the quick setup wizard.
 
 OAuth for Office 365 accounts is supported, but Microsoft does not offer OAuth for Outlook, Live and Hotmail accounts (yet?).
 
@@ -2226,7 +2229,7 @@ Biometric authentication is a pro feature.
 <a name="faq114"></a>
 **(114) Can you add an import for the settings of other email apps?**
 
-The format of the settings files of most other email apps is not documented, so this is difficult. Sometimes it is possible to reverse engineer the format, but as soon as the settings format changes things will break. Also, settings are often incompatible. For example, FairEmail has unlike most other email apps settings for the number of days to synchronize messages for and for the number of days to keep messages for, mainly to save on battery usage. Además, configurar una cuenta/identidad con el asistente de configuración rápida es sencillo, por lo que realmente no vale la pena el esfuerzo.
+The format of the settings files of most other email apps is not documented, so this is difficult. Sometimes it is possible to reverse engineer the format, but as soon as the settings format changes things will break. Also, settings are often incompatible. For example, FairEmail has unlike most other email apps settings for the number of days to synchronize messages for and for the number of days to keep messages for, mainly to save on battery usage. Moreover, setting up an account/identity with the quick setup wizard is simple, so it is not really worth the effort.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2646,7 +2653,7 @@ There is **only support** on the latest Play store version, the latest GitHub re
 
 F-Droid builds irregularly, which can be problematic when there is an important update. Therefore you are advised to switch to the GitHub release.
 
-The F-Droid version is built from the same source code, but signed differently. Esto significa que todas las características están disponibles también en la versión de F-Droid excepto para usar el asistente de configuración rápida con Gmail porque Google aprobó (y permite) una sola firma de la aplicación. For all other email providers, OAuth access is only available in Play Store versions and Github releases, as the email providers only permit the use of OAuth for official builds.
+The F-Droid version is built from the same source code, but signed differently. This means that all features are available in the F-Droid version too, except for using the Gmail quick setup wizard because Google approved (and allows) one app signature only. For all other email providers, OAuth access is only available in Play Store versions and Github releases, as the email providers only permit the use of OAuth for official builds.
 
 Note that you'll need to uninstall the F-Droid build first before you can install a GitHub release because Android refuses to install the same app with a different signature for security reasons.
 
@@ -2748,7 +2755,7 @@ You can view it with for example the Android app [Letter Opener](https://play.go
 <a name="faq156"></a>
 **(156) How can I set up an Office 365 account?**
 
-Se puede configurar una cuenta de Office 365 mediante el asistente de configuración rápida y seleccionando *Office 365 (OAuth)*.
+An Office 365 account can be set up via the quick setup wizard and selecting *Office 365 (OAuth)*.
 
 If the wizard ends with *AUTHENTICATE failed*, IMAP and/or SMTP might be disabled for the account. In this case you should ask the administrator to enable IMAP and SMTP. The procedure is documented [here](https://docs.microsoft.com/en-in/exchange/troubleshoot/configure-mailboxes/pop3-imap-owa-activesync-office-365).
 
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-eu-rES.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-fa-rIR.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-fi-rFI.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-fr-rCA.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* signifie généralement qu'une adresse est utilisée à la fois comme adresse de destinataire et en copie
 * *554 5.7.1 ... not permitted to relay* signifie que le serveur de messagerie ne reconnaît pas le nom d'utilisateur/adresse e-mail. Veuillez vérifier le nom d’hôte et le nom d’utilisateur/adresse e-mail dans les paramètres d’identité.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -1463,11 +1466,11 @@ If you want to use preformatted text, like [ASCII art](https://en.wikipedia.org/
 
 The email icon in the folder list can be open (outlined) or closed (solid):
 
-![Image externe](https://github.com/M66B/FairEmail/blob/master/images/baseline_mail_outline_black_48dp.png)
+![External image](https://github.com/M66B/FairEmail/blob/master/images/baseline_mail_outline_black_48dp.png)
 
 Message bodies and attachments are not downloaded by default.
 
-![Image externe](https://github.com/M66B/FairEmail/blob/master/images/baseline_email_black_48dp.png)
+![External image](https://github.com/M66B/FairEmail/blob/master/images/baseline_email_black_48dp.png)
 
 Message bodies and attachments are downloaded by default.
 
@@ -1850,7 +1853,7 @@ Please see [here](https://en.wikipedia.org/wiki/Web_beacon) about what a trackin
 
 FairEmail will in most cases automatically recognize tracking images and replace them by this icon:
 
-![Image externe](https://github.com/M66B/FairEmail/blob/master/images/baseline_my_location_black_48dp.png)
+![External image](https://github.com/M66B/FairEmail/blob/master/images/baseline_my_location_black_48dp.png)
 
 Automatic recognition of tracking images can be disabled in the privacy settings.
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2589,7 +2596,7 @@ Version 1.1082 added a local trash folder. Note that trashing a message will per
 
 To record voice notes you can press this icon in the bottom action bar of the message composer:
 
-![Image externe](https://github.com/M66B/FairEmail/blob/master/images/baseline_record_voice_over_black_48dp.png)
+![External image](https://github.com/M66B/FairEmail/blob/master/images/baseline_record_voice_over_black_48dp.png)
 
 This requires a compatible audio recorder app to be installed. In particular [this common intent](https://developer.android.com/reference/android/provider/MediaStore.Audio.Media.html#RECORD_SOUND_ACTION) needs to be supported.
 
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,34 +2885,36 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Obtenir de l'aide
 
-FairEmail est pris en charge uniquement sur les smartphones, tablettes et ChromeOS.
+FairEmail is supported on smartphones, tablets and ChromeOS only.
 
-Seules la dernière version du Play Store et la dernière version de GitHub sont prises en charge. La version F-Droid n'est prise en charge que si le numéro de version est le même que le numéro de version de la dernière version de GitHub. Cela signifie également que la rétrogradation n'est pas prise en charge.
+Only the latest Play store version and latest GitHub release are supported. The F-Droid build is supported only if the version number is the same as the version number of the latest GitHub release. This also means that downgrading is not supported.
 
-Il n'y a pas de support sur des choses qui ne sont pas directement liées à FairEmail.
+There is no support on things that are not directly related to FairEmail.
 
-Il n'y a aucun soutien pour construire et développer les choses par vous-même.
+There is no support on building and developing things by yourself.
 
-Les fonctionnalités demandées doivent :
+Requested features should:
 
 * be useful to most people
 * not complicate the usage of FairEmail
 * fit within the philosophy of FairEmail (privacy oriented, security minded)
 * comply with common standards (IMAP, SMTP, etc)
 
-Les caractéristiques qui ne satisfont pas à ces exigences seront probablement rejetées. Il s'agit également de maintenir la maintenance et le soutien à long terme réalisable.
+Features not fulfilling these requirements will likely be rejected. This is also to keep maintenance and support in the long term feasible.
 
-Si vous avez une question, si vous voulez demander une fonctionnalité ou signaler un bogue, veuillez utiliser [ce formulaire](https://contact.faircode.eu/?product=fairemailsupport).
+If you have a question, want to request a feature or report a bug, please use [this form](https://contact.faircode.eu/?product=fairemailsupport).
 
-Les tickets GitHub sont désactivés en raison d'un usage abusif fréquent.
+GitHub issues are disabled due to frequent misusage.
 
 <br />
 

docs/FAQ-fr-rFR.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* signifie généralement qu'une adresse est utilisée à la fois comme adresse de destinataire et en copie
 * *554 5.7.1 ... not permitted to relay* signifie que le serveur de messagerie ne reconnaît pas le nom d'utilisateur/adresse e-mail. Veuillez vérifier le nom d’hôte et le nom d’utilisateur/adresse e-mail dans les paramètres d’identité.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -1463,11 +1466,11 @@ If you want to use preformatted text, like [ASCII art](https://en.wikipedia.org/
 
 The email icon in the folder list can be open (outlined) or closed (solid):
 
-![Image externe](https://github.com/M66B/FairEmail/blob/master/images/baseline_mail_outline_black_48dp.png)
+![External image](https://github.com/M66B/FairEmail/blob/master/images/baseline_mail_outline_black_48dp.png)
 
 Message bodies and attachments are not downloaded by default.
 
-![Image externe](https://github.com/M66B/FairEmail/blob/master/images/baseline_email_black_48dp.png)
+![External image](https://github.com/M66B/FairEmail/blob/master/images/baseline_email_black_48dp.png)
 
 Message bodies and attachments are downloaded by default.
 
@@ -1850,7 +1853,7 @@ Please see [here](https://en.wikipedia.org/wiki/Web_beacon) about what a trackin
 
 FairEmail will in most cases automatically recognize tracking images and replace them by this icon:
 
-![Image externe](https://github.com/M66B/FairEmail/blob/master/images/baseline_my_location_black_48dp.png)
+![External image](https://github.com/M66B/FairEmail/blob/master/images/baseline_my_location_black_48dp.png)
 
 Automatic recognition of tracking images can be disabled in the privacy settings.
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2589,7 +2596,7 @@ Version 1.1082 added a local trash folder. Note that trashing a message will per
 
 To record voice notes you can press this icon in the bottom action bar of the message composer:
 
-![Image externe](https://github.com/M66B/FairEmail/blob/master/images/baseline_record_voice_over_black_48dp.png)
+![External image](https://github.com/M66B/FairEmail/blob/master/images/baseline_record_voice_over_black_48dp.png)
 
 This requires a compatible audio recorder app to be installed. In particular [this common intent](https://developer.android.com/reference/android/provider/MediaStore.Audio.Media.html#RECORD_SOUND_ACTION) needs to be supported.
 
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,34 +2885,36 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Obtenir de l'aide
 
-FairEmail est pris en charge uniquement sur les smartphones, tablettes et ChromeOS.
+FairEmail is supported on smartphones, tablets and ChromeOS only.
 
-Seules la dernière version du Play Store et la dernière version de GitHub sont prises en charge. La version F-Droid n'est prise en charge que si le numéro de version est le même que le numéro de version de la dernière version de GitHub. Cela signifie également que la rétrogradation n'est pas prise en charge.
+Only the latest Play store version and latest GitHub release are supported. The F-Droid build is supported only if the version number is the same as the version number of the latest GitHub release. This also means that downgrading is not supported.
 
-Il n'y a pas de support sur des choses qui ne sont pas directement liées à FairEmail.
+There is no support on things that are not directly related to FairEmail.
 
-Il n'y a aucun soutien pour construire et développer les choses par vous-même.
+There is no support on building and developing things by yourself.
 
-Les fonctionnalités demandées doivent :
+Requested features should:
 
 * be useful to most people
 * not complicate the usage of FairEmail
 * fit within the philosophy of FairEmail (privacy oriented, security minded)
 * comply with common standards (IMAP, SMTP, etc)
 
-Les caractéristiques qui ne satisfont pas à ces exigences seront probablement rejetées. Il s'agit également de maintenir la maintenance et le soutien à long terme réalisable.
+Features not fulfilling these requirements will likely be rejected. This is also to keep maintenance and support in the long term feasible.
 
-Si vous avez une question, si vous voulez demander une fonctionnalité ou signaler un bogue, veuillez utiliser [ce formulaire](https://contact.faircode.eu/?product=fairemailsupport).
+If you have a question, want to request a feature or report a bug, please use [this form](https://contact.faircode.eu/?product=fairemailsupport).
 
-Les tickets GitHub sont désactivés en raison d'un usage abusif fréquent.
+GitHub issues are disabled due to frequent misusage.
 
 <br />
 

docs/FAQ-fy-rNL.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-gl-rES.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-hi-rIN.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-hr-rHR.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-hu-rHU.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-in-rID.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Sila periksa lagi nama host dan nama pengguna/alamat surel pada pengaturan identitas.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-it-rIT.md

@@ -922,7 +922,8 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Destinatario già specificato* significa principalmente che un indirizzo è in uso sia come indirizzo TO che CC
 * *554 5.7.1 ... non è consentito trasmettere* significa che il server di posta elettronica non riconosce il nome utente/indirizzo email. Si prega di controllare il nome host e il nome utente/indirizzo email nelle impostazioni di identità.
 * *550 Messaggio di spam rifiutato perché l'IP è elencato per ...* significa che il server dell'email ha rifiutato di inviare un messaggio dall'indirizzo di rete attuale (pubblico) perché usato erroneamente per inviare spam da qualcun altro (si spera) in precedenza. Sei pregato di provare ad abilitare la modalità aereo per 10 minuti per acquisire un nuovo indirizzo di rete.
-* *571 5.7.1 Il messaggio contiene spam o virus o il mittente è bloccato ...* significa che il server dell'email ha considerato un messaggio come spam. Questo significa probabilmente che i filtri spam del server email sono troppo rigidi. Dovrai contattare il provider di posta elettronica per avere supporto a riguardo.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
+* *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
 
@@ -1086,6 +1087,8 @@ Ci sono scorciatoie disponibili per comporre un nuovo messaggio a un contatto pr
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identità: xyz@example.com; regex: **(?i)xyz**
 * Identità: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -1201,7 +1204,7 @@ If you are comparing the battery usage of FairEmail with another email client, p
 
 Reconnecting to an email server will use extra battery power, so an unstable internet connection will result in extra battery usage. Also, some email servers prematurely terminate idle connections, while [the standard](https://tools.ietf.org/html/rfc2177) says that an idle connection should be kept open for 29 minutes. In these cases you might want to synchronize periodically, for example each hour, instead of continuously. Note that polling frequently (more than every 30-60 minutes) will likely use more battery power than synchronizing always because connecting to the server and comparing the local and remote messages are expensive operations.
 
-[Su alcuni dispositivi](https://dontkillmyapp.com/) è necessario *disabilitare* le ottimizzazioni della batteria (configurazione, passaggio 3) per mantenere le connessioni ai server email aperti. In fact, leaving battery optimizations enabled can result in extra battery usage for all devices, even though this sounds contradictory!
+[On some devices](https://dontkillmyapp.com/) it is necessary to *disable* battery optimizations (setup step 3) to keep connections to email servers open. In fact, leaving battery optimizations enabled can result in extra battery usage for all devices, even though this sounds contradictory!
 
 Most of the battery usage, not considering viewing messages, is due to synchronization (receiving and sending) of messages. So, to reduce the battery usage, set the number of days to synchronize message for to a lower value, especially if there are a lot of recent messages in a folder. Long press a folder name in the folders list and select *Edit properties* to access this setting.
 
@@ -1219,7 +1222,7 @@ FairEmail will by default synchronize the folder list on each connection. Since
 
 FairEmail will by default check if old messages were deleted from the server on each connection. If you don't mind that old messages that were delete from the server are still visible in FairEmail, you can save some network and battery usage by disabling this in the receive settings.
 
-Some providers don't follow the IMAP standard and don't keep connections open long enough, forcing FairEmail to reconnect often, causing extra battery usage. You can inspect the *Log* via the main navigation menu to check if there are frequent reconnects (connection closed/reset, read/write error/timeout, etc). You can workaround this by lowering the keep-alive interval in the advanced account settings to for example 9 or 15 minutes. Nota che le ottimizzazioni della batteria devono essere disabilitate nel passaggio 3 della configurazione per mantenere la connessione.
+Some providers don't follow the IMAP standard and don't keep connections open long enough, forcing FairEmail to reconnect often, causing extra battery usage. You can inspect the *Log* via the main navigation menu to check if there are frequent reconnects (connection closed/reset, read/write error/timeout, etc). You can workaround this by lowering the keep-alive interval in the advanced account settings to for example 9 or 15 minutes. Note that battery optimizations need to be disabled in setup step 3 to reliably keep connections alive.
 
 Some providers send every two minutes something like '*Still here*' resulting in network traffic and your device to wake up and causing unnecessary extra battery usage. You can inspect the *Log* via the main navigation menu to check if your provider is doing this. If your provider is using [Dovecot](https://www.dovecot.org/) as IMAP server, you could ask your provider to change the [imap_idle_notify_interval](https://wiki.dovecot.org/Timeouts) setting to a higher value or better yet, to disable this. If your provider is not able or willing to change/disable this, you should consider to switch to periodically instead of continuous synchronization. You can change this in the receive settings.
 
@@ -1384,7 +1387,7 @@ You can synchronize more or even all messages by long pressing a folder (inbox)
 
 Folders are first sorted on account order (by default on account name) and within an account with special, system folders on top, followed by folders set to synchronize. Within each category the folders are sorted on (display) name. You can set the display name by long pressing a folder in the folder list and selecting *Edit properties*.
 
-L'elemento del menu di navigazione (hamburger) *Ordine cartelle* nella configurazione è utilizzabile per ordinare manualmente le cartelle.
+The navigation (hamburger) menu item *Order folders* in the settings can be used to manually order the folders.
 
 <br />
 
@@ -2180,7 +2183,7 @@ Some email clients use IMAP keywords for colors. However, not all servers suppor
 
 Empty messages and/or corrupt attachments are probably being caused by a bug in the server software. Older Microsoft Exchange software is known to cause this problem. Mostly you can workaround this by disabling *Partial fetch* in the advanced account settings:
 
-Impostazioni > Configurazione manuale ed altre opzioni > Account > clicca account > clicca avanzato > Recupero parziale > deseleziona
+Settings > Manual setup and more options > Accounts > tap account > tap advanced > Partial fetch > uncheck
 
 After disabling this setting, you can use the message 'more' (three dots) menu to 'resync' empty messages. Alternatively, you can *Delete local messages* by long pressing the folder(s) in the folder list and synchronize all messages again.
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2455,7 +2462,7 @@ Note that the desciption of FairEmail starts with the remark that non-standard p
 
 *POP3*
 
-Nelle impostazioni dell'account (Impostazioni, clicca Configurazione manuale ed altre opzioni, clicca Account, clicca Account) puoi abilitare *Lascia i messaggi eliminati sul server*.
+In the account settings (Settings, tap Manual setup and more options, tap Accounts, tap account) you can enable *Leave deleted messages on server*.
 
 *IMAP*
 
@@ -2550,7 +2557,7 @@ Displaying strange characters is almost always caused by specifying no or an inv
 
 To store draft messages a drafts folder is required. In most cases FairEmail will automatically select the drafts folders on adding an account based on [the attributes](https://www.iana.org/assignments/imap-mailbox-name-attributes/imap-mailbox-name-attributes.xhtml) the email server sends. However, some email servers are not configured properly and do not send these attributes. In this case FairEmail tries to identify the drafts folder by name, but this might fail if the drafts folder has an unusual name or is not present at all.
 
-Puoi risolvere questo problema selezionando manualmente la cartella delle bozze nelle impostazioni del profilo (Impostazione, Configurazione manuale ed altre opzioni, clicca in basso su Account). If there is no drafts folder at all, you can create a drafts folder by tapping on the '+' button in the folder list of the account (tap on the account name in the navigation menu).
+You can fix this problem by manually selecting the drafts folder in the account settings (Settings, tap Manual setup and more options, tap Accounts, tap account, at the bottom). If there is no drafts folder at all, you can create a drafts folder by tapping on the '+' button in the folder list of the account (tap on the account name in the navigation menu).
 
 Some providers, like Gmail, allow enabling/disabling IMAP for individual folders. So, if a folder is not visible, you might need to enable IMAP for the folder.
 
@@ -2631,7 +2638,7 @@ Since the sent date/time is optional and can be manipulated by the sender, FairE
 
 Sometimes the server received date/time is incorrect, mostly because messages were incorrectly imported from another server and sometimes due to a bug in the email server.
 
-In these rare cases, it is possible to let FairEmail use either the date/time from the *Date* header (sent time) or from the *Received* header as a workaround. Ciò può essere cambiato nelle impostazioni avanzate dell'account: Impostazioni, clicca Configurazione manuale ed altre opzioni, clicca Account, clicca Account, clicca Avanzate.
+In these rare cases, it is possible to let FairEmail use either the date/time from the *Date* header (sent time) or from the *Received* header as a workaround. This can be changed in the advanced account settings: Settings, tap Manual setup and more options, tap Accounts, tap account, tap Advanced.
 
 This will not change the time of already synchronized messages. To solve this, long press the folder(s) in the folder list and select *Delete local messages* and *Synchronize now*.
 
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Ricevi supporto

docs/FAQ-iw-rIL.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-ja-rJP.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-ka-rGE.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-kk-rKZ.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-ko-rKR.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-lt-rLT.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-nl-rNL.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-nn-rNO.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-no-rNO.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-pl-rPL.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* przeważnie oznacza, że adres jest używany zarówno jako adres DO, jak i DW
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Wsparcie

docs/FAQ-pt-rBR.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-pt-rPT.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-ro-rRO.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-ru-rRU.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... пересылка запрещена* означает, что почтовый сервер не распознает имя пользователя/адрес электронной почты. Пожалуйста, проверьте имя хоста и имя пользователя/адрес электронной почты в настройках идентификатора.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-si-rLK.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-sk-rSK.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support

docs/FAQ-sl-rSI.md

@@ -922,6 +922,7 @@ SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia
 * *503 5.5.0 Recipient already specified* mostly means that an address is being used both as TO and CC address
 * *554 5.7.1 ... not permitted to relay* means that the email server does not recognize the username/email address. Please double check the host name and username/email address in the identity settings.
 * *550 Spam message rejected because IP is listed by ...* means that the email server rejected to send a message from the current (public) network address because it was misused to send spam by (hopefully) somebody else before. Please try to enable flight mode for 10 minutes to acquire a new network address.
+* *550 We're sorry, but we can't send your email. Either the subject matter, a link, or an attachment potentially contains spam, or phishing or malware.* means that the email provider considers an outgong message as harmful.
 * *571 5.7.1 Message contains spam or virus or sender is blocked ...* means that the email server considered an outgoing message as spam. This probably means that the spam filters of the email server are too strict. You'll need to contact the email provider for support on this.
 
 If you want to use the Gmail SMTP server to workaround a too strict outgoing spam filter or to improve delivery of messages:
@@ -1086,6 +1087,8 @@ There are shortcuts available to compose a new message to a favorite contact.
 
 Shortcuts require Android 7.1 Nougat or later. The usage of shortcuts is explained [here](https://support.google.com/android/answer/2781850).
 
+It is also possible to create shortcuts to folders by long pressing a folder in the folder list of an account and selecting *Add shortcut*.
+
 <br />
 
 <a name="faq32"></a>
@@ -1140,7 +1143,7 @@ If you like to match the special purpose email addresses abc@example.com and xyx
 * Identity: xyz@example.com; regex: **(?i)xyz**
 * Identity: main@example.com; regex: **^(?i)((?!abc|xyz).)\*$**
 
-Matched identities can be used to color code messages. The identity color takes precedence over the account color. Setting identity colors is a pro feature.
+Matched identities can be used to color code messages. The identity color takes precedence over the folder and account color. Setting identity colors is a pro feature.
 
 <br />
 
@@ -2355,6 +2358,10 @@ Please see [this FAQ](#user-content-faq163) for details.
 
 Since this is an experimental feature, my advice is to start with just one folder.
 
+*Send user unknown (version 1.1477+)*
+
+Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) *User unknown* via the answer menu.
+
 <br />
 
 <a name="faq126"></a>
@@ -2854,15 +2861,15 @@ To prevent the email server from moving a message into the spam folder again and
 
 The message classifier calculates the probability a message belongs in a folder (class). There are two options in the miscellaneous settings which control if a message will be automatically moved into a folder, provided that auto classification is enabled for the folder:
 
-* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 20 %)
+* *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
 Both conditions must be satisfied before a message will be moved.
 
-Considering the defaults option values:
+Considering the default option values:
 
 * Apples 40 % and bananas 30 % would be disregarded because the difference of 25 % is below the minimum of 50 %
-* Apples 15 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 20 %
+* Apples 10 % and bananas 5 % would be disregarded because the probability for apples is below the minimum of 15 %
 * Apples 50 % and bananas 20 % would result in selecting apples
 
 Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
@@ -2878,10 +2885,12 @@ Message classification is a pro feature, except for the spam folder.
 <a name="faq164"></a>
 **(164) Can you add customizable themes?**
 
-Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need to be predefined.
+Unfortunately, Android [does not support](https://stackoverflow.com/a/26511725/1794097) dynamic themes, which means all themes need [to be predefined](https://github.com/M66B/FairEmail/blob/master/app/src/main/res/values/styles.xml).
 
 Moreover, a theme is more than just a few colors. For example themes with a yellow accent color use a darker link color for enough contrast.
 
+The theme colors are based on the color circle of [Johannes Itten](https://en.wikipedia.org/wiki/Johannes_Itten).
+
 <br />
 
 ## Get support