Noted. The last message was just for the weekend but we understand. We won't let it go on for 3 days but 1 - 2 days should suffice for important or feedback messages. How does that sound? Of course, remember that too many people often close the message prematurely so we need to consider this, as you understand.
I think that's a good idea. Perhaps a Delete Messages inbox that will auto-delete itself within X amount of days or until you decide to permanently delete the message yourself? How does that sound? Basically, a near mini webmail without going too deep.