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Answers and rating deltas for

How can i know if someone has opened an email?

Author Votes Δ
Kiran RS 3 +4.10
sushant-hiray 1 -1.98
Noufal Ibrahim 1 -0.26
Bryce Morrison 0 0.00
Bryce Morrison -1 0.00
Last visited: Sep 14, 2014, 5:07:29 AM