kmail: How do I request "Return on Receipt?

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Last Modified: Feb 22, 2011 4:11 PM
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kmail: How do I request "Return on Recept?"

Q: How do I request a "Return on Receipt" email confirmation on an email that I'm sending to someone.

A: Mail does not offer a "Return on Receipt" mail option at this time. However, you can invoke a terminal command and mail will request a return receipt email on ALL of your email.

Complete the following steps:

Note: the following relies no undocumented features of Mail and I don't take any responsibility if things break for you...

Quit Mail
Open Terminal (/Applications/Utilities/)
Enter the following text (make sure to keep all quotes exactly as is!)

defaults write UserHeaders '{"Disposition-Notification-To"="your@address";}'
(of course, using your correct email address instead of "your@address")
All future messages sent with Mail will now include the Disposition-Notification-To header which is the one asking for a return receipt.

If you wish to turn off this feature in the future, type the following in the Terminal:

defaults delete UserHeaders

Credit to: Andreas Amann, "Does Mail 2.01 Have Return Receipt Feature?" #5, 01:37pm Jul 1, 2005 CDT for this tip.

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