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Thaxll
on May 7, 2019
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Css-only-chat: A truly monstrous async web chat us...
It does solve the problem because Google download the image no mater what so you can't know if someone opened the image or not.
forgotmypw3
on May 7, 2019
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Google's service delays downloading the image until the moment it is requested by the client.
zimmund
on May 7, 2019
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Correct. This is how Mailchimp and other similar services can tell if you opened an email.
ehsankia
on May 7, 2019
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But is that when they "open" the email, or simply them opening Gmail?
Andrex
on May 7, 2019
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Mailchimp analytics would outright not work if it was the latter, so it's probably the former.
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