Quote from GasGiant on 09/15/09 at 09:53:56:If you send an email from Outlook is there a way to tell if it has not been delivered?
As a matter of fact, yes.
Open a new message and go to Options. Check off "Request a
delivery receipt". Note that this is different than a "Read receipt" which the receiver has the option to Not send, per message or as a default. I'm not sure of the technical aspect of how this works, but somehow the destination server sends a reply. However, this only confirms that the message has been delivered, not that it has been opened or filtered out. The lack of a reply indicates it was not delivered, but there is no positive notice that it wasn't - you'd have to manually follow up.