Wikipedia
In e-mail, the term return receipt is somewhat misleading. When delivering a message to a recipient's computer system there is no way to force that computer system to issue an acknowledgment to the sender.
This is in contrast with a physical delivery medium in which a courier acting on behalf of the sender can honor the sender's requirements for delivery - including hand-delivery of the message to the recipient and even requiring that recipient to authenticate himself to the courier before receiving the message. This difference in capability between physical delivery systems and electronic mail causes confusion and misunderstanding. For this reason, many experts eschew the term return receipt in connection with e-mail, in favor of less misleading terms.
However, two notification services similar to those available for physical delivery are available for e-mail. One is called Delivery Status Notifications or DSNs, and the other is termed Message Disposition Notifications or MDNs.
Usage examples of "return receipt".
It is to be mailed to the Massachusetts Attorney General, Return Receipt Requested, in the event I have an accident.
I had sent a letter out and, you know, I had sent it return receipt requested, and then it occurred to me that I hadn’.
We sent the check for the full amount, eighty-five thousand dollars, ten days ago by registered mail, return receipt requested, overnight delivery, and it was signed for by”.
He didn't acknowledge the package, but I knew that he received it because I had mailed it Return Receipt Requested.
A day later he receives a call from the judge's clerk telling him that the application was rejected and they will be sending him a notice to that effect by registered mail return receipt requested.
The next thing they tell me to do with you, they're going to have to do it by registered mail, return receipt requested.
With the assistance of a wet paper copier, I made copies and sent the originals in to the President, registered, return receipt requested.
Keith requested return receipt and was filling out the tag when he heard the clerk a few windows away say, You have a good day, Mrs.