How do I determine if a sent message had a return receipt request attached?
I don't always send return receipt requests with messages so I'm wondering how I can tell if I sent an RRR with a particular sent message? If I sent to multiple recipients, I'd like to know who has not returned a receipt.
I don't always send return receipt requests with messages so I'm wondering how I can tell if I sent
an RRR with a particular sent message? If I sent to multiple recipients, I'd like to know who has not
returned a receipt.
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Please don't start multiple threads for the same problem. Continue at https://support.mozilla.org/en-US/questions/1012949