Added FAQ

FAQ.md

@@ -234,6 +234,7 @@ FairEmail follows all the best practices for an email client as decribed in [thi
 * [(132) Why are new message notifications silent?](#user-content-faq132)
 * [(133) Why is ActiveSync not supported?](#user-content-faq133)
 * [(134) Can you add deleting local messages?](#user-content-faq134)
+* [(135) Why are trashed messages and drafts shown in conversations?](#user-content-faq135)
 
 [I have another question.](#user-content-support)
 
@@ -2270,6 +2271,20 @@ As an alternative you can snooze messages, which will hide messages for a select
 
 <br />
 
+<a name="faq135"></a>
+**(135) Why are trashed messages and drafts shown in conversations?**
+
+Individual messages will rarely be trashed and mostly this happens by accident.
+Showing trashed messages in conversations makes it easier to find them back.
+
+You can permanently delete a message using the message three-dots *delete* menu, which will remove the message from the conversation.
+Note that this irreversible.
+
+Similarly, drafts are shown in conversations to find them back in the context where they belong.
+It is easy to read through the received messages before continuing to write the draft later.
+
+<br />
+
 
 ## Support