Added BCC hint text

app/src/main/res/layout/fragment_identity.xml

@@ -588,6 +588,16 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/tvBcc" />
 
+        <eu.faircode.email.FixedTextView
+            android:id="@+id/tvBccHint"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/title_advanced_bcc_hint"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            android:textStyle="italic"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/etBcc" />
+
         <Button
             android:id="@+id/btnSave"
             android:layout_width="wrap_content"
@@ -596,7 +606,7 @@
             android:tag="disable"
             android:text="@string/title_save"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/etBcc" />
+            app:layout_constraintTop_toBottomOf="@id/tvBccHint" />
 
         <eu.faircode.email.ContentLoadingProgressBar
             android:id="@+id/pbSave"
@@ -709,7 +719,7 @@
                 cbUseIp,tvUseIpHint,
                 cbSynchronize,cbPrimary,
                 cbSenderExtra,tvSenderExtra,etSenderExtra,tvSenderExtraHint,
-                tvReplyTo,etReplyTo,tvBcc,etBcc" />
+                tvReplyTo,etReplyTo,tvBcc,etBcc,tvBccHint" />
 
         <androidx.constraintlayout.widget.Group
             android:id="@+id/grpError"

app/src/main/res/values/strings.xml

@@ -490,6 +490,7 @@
     <string name="title_advanced_autoseen_hint">Automatically marking messages read on expanding can be disabled in the individual account settings</string>
     <string name="title_advanced_autoclose_hint">Automatically close conversations when all messages are archived, sent or trashed</string>
     <string name="title_advanced_sender_hint">Most providers do not allow modified sender addresses</string>
+    <string name="title_advanced_bcc_hint">The address won\'t be shown, but will be added on sending</string>
 
     <string name="title_advanced_display_harmful_hint">Disabling this option might be harmful to your privacy</string>
     <string name="title_advanced_display_hidden_hint">This can result in odd looking and double texts</string>