Added provider documentation

app/src/main/java/eu/faircode/email/EmailProvider.java

@@ -161,6 +161,9 @@ public class EmailProvider implements Parcelable {
                         provider.useip = xml.getAttributeBooleanValue(null, "useip", true);
                         provider.appPassword = xml.getAttributeBooleanValue(null, "appPassword", false);
                         provider.link = xml.getAttributeValue(null, "link");
+                        String documentation = xml.getAttributeValue(null, "documentation");
+                        if (documentation != null)
+                            provider.documentation = new StringBuilder(documentation);
                         provider.type = xml.getAttributeValue(null, "type");
                         String user = xml.getAttributeValue(null, "user");
                         if ("local".equals(user))

app/src/main/res/xml/providers.xml

@@ -161,6 +161,7 @@
     </provider>
     <provider
         name="Posteo.de"
+        documentation="Please check if &lt;a href=&quot;https://posteo.de/en/help/activating-additional-email-account-protection&quot;&gt;additional email account protection&lt;/a&gt; isn't enabled"
         domain="posteo\\..*"
         link="https://posteo.de/en/help/how-do-i-set-up-posteo-in-an-email-client-pop3-imap-and-smtp">
         <imap
@@ -175,6 +176,7 @@
     <provider
         name="free.fr"
         appPassword="true"
+        documentation="SMTP est désactivé par défaut, veuillez &lt;a href=&quot;http://jc.etiemble.free.fr/abc/index.php/trucs-astuces/configurer-smtp-free-fr&quot;&gt;voir ici&lt;/a&gt; pour un guide détaillé"
         domain="free\\.fr"
         link="https://github.com/M66B/FairEmail/blob/master/FAQ.md#user-content-faq157">
         <imap