How to Track Sent Mail Read/Unread Status in Gmail
It would be fascinating if you could know the status of the sent mail - whether it is read or not by the receiver. There is a chance to know the status of the sent mail with the conventional mailing systems by attaching an acknowledgement form to it. But when it comes to e-mail, the story is different. You won't know the status of an sent email unless the receiver reply back to you.
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