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gokhan
on Feb 1, 2012
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Giving away the secrets of 99.3% email delivery
What are those options for feedback loops? Hotmail got one [1], but Gmail and Yahoo don't, AFAIK.
[1]
https://support.msn.com/eform.aspx?productKey=edfsjmrpp&...
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[1] https://support.msn.com/eform.aspx?productKey=edfsjmrpp&...