How can I request a return receipt or delivery notification?
[IMP 2.2] IMP 2.2 supports neither return receipts nor delivery notification. [IMP 3.x/4.x] IMP 3.x/4.x does have support for return receipts. You can request a return receipt by clicking the “Request a Return Receipt” checkbox in the message composition screen. Whether or not you will get a confirmation back depends on many factors outside of IMP’s control. For example, some mail servers will remove return receipt requests from mail before it reaches the recipient, and some mail clients will allow the user to select if return receipts should be honored. Because of these and other factors, you should not depend on return receipts being honored by all recipients.
