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Can an email delivery silently fail ever, with the sender receiving no notification whatsoever about the failed delivery?
Specifically, can silent delivery failures occur for mail sent to a Gmail account:
- From another Gmail account?
- From a non-Gmail account?
I once in a while hear some people complain about not receiving my email, especially when I follow up on the email contents with them over phone. At that point they ask me to try resending.
Doesn't the SMTP protocol guarantee email delivery, or at least a failed delivery notification to the sender?
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It is quite common for organizations to have spam filters which expressly ditch the message silently. In some situations, generating bounce messages is prone to abuse; look up "blowback" or "backscatter"
– tripleee – 2017-08-23T11:30:35.990