Added FAQ

FAQ.md

@@ -124,6 +124,7 @@ Note that your contacts could unknowingly send malicious messages if they got in
 * [(61) Why are some messages shown dimmed?](#user-content-faq61)
 * [(62) Which authentication methods are supported?](#user-content-faq62)
 * [(63) How are images resized for displaying on screens?](#user-content-faq63)
+* [(64) Can you add custom actions for swipe left/right?](#user-content-faq64)
 
 [I have another question.](#support)
 
@@ -988,6 +989,15 @@ Images are scaled down using whole number factors to reduce memory usage and to
 
 <br />
 
+<a name="faq64"></a>
+**(64) Can you add custom actions for swipe left/right?**
+
+The most natural thing to do when swiping a list entry left or right is to remove the entry from the list.
+The most natural action in the context of FairEmail is to either archive or trash the message.
+Other actions, like adding stars to messages, reporting messages as spam and move messages are available via multiple selection.
+
+<br />
+
 ## Support
 
 If you have another question, want to request a feature or report a bug, you can use [this forum](https://forum.xda-developers.com/android/apps-games/source-email-t3824168).