Two years ago, I wrote a Troubleshooter Q&A about turning on read receipts in OWA. I just noticed the reader comments, which aren’t very nice; they complain that I didn’t actually include a description of how to do it for Outlook. (In fairness, if you search for “Outlook force read receipt” my article comes up near the top.)
So, the answer: HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Preferences\ReadReceipt, a REG_DWORD, controls this. Set it to “1” and Outlook will request a read receipt for every outbound message. Problem solved!
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I am *so* glad I know have too many readers like that. There was the one guy a few years ago that read me the riot act because I did not cover something (pretty obscure) in a 24seven book. He went on for two paragraphs telling me how clueless I was for not covering the thing he wanted to know.
I never heard back from him after I replied telling him which page number it was actually on. 🙂