FAQ.md

@@ -4,4 +4,4 @@ List of questions:
 
 # When I introduce two contacts to each other, do they need to come online at the same time to start using their mailboxes?
 
-_to be answered_
\ No newline at end of file
+Yes, they need to be online at the same time at least once before they can communicate via mailboxes.
\ No newline at end of file