Added FAQs

FAQ.md

@@ -22,6 +22,22 @@ Valid security certificates are officially signed (not self signed) and have mat
 * View network connections (ACCESS_NETWORK_STATE): to monitor internet connectivity changes
 * Run at startup (RECEIVE_BOOT_COMPLETED): to start monitoring on device start
 
+<a name="FAQ4"></a>
+**(4) What are operations?**
+
+The low priority status bar notification shows the number of pending operations, which can be:
+
+* Mark message as seen/unseen in remote folder
+* Add message to remote folder
+* Move message to another remote folder
+* Delete message from remote folder
+* Send message
+
+<a name="FAQ5"></a>
+**(5) What happens if a message could not be sent?**
+
+If a message could not be sent, it will be placed in the drafts folder again.
+
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 If you have another question, you can use [this forum](https://forum.xda-developers.com/).