Mail Receipt is a macOS application that adds delivery notification and read receipt requests to your e-mails.
Features:
Mail Receipt adds requests for delivery notification and read receipts to your outgoing e-mails. To do this Mail Receipt adds three additional headers to your Mail.app sent e-mails. These headers are:
Disposition-Notification-To
Return-Receipt-To
Bcc
What’s new in version 1.0.0
Updated on Apr 27 2018
Version 1.0.0:
Release notes were unavailable when this listing was updated