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jerrygoyal
on Sept 29, 2020
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The life and death of email read tracking
nope, not sure about the gmail proxy servers but you get alerts everytime user opens the mail. speaking from first hand experience.
pirsquare
on Sept 29, 2020
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That happens if email is opened via clients like Thunderbird. For gmail, image will be served via google proxy servers.
pixl97
on Sept 29, 2020
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What is the cache time for said proxy servers? Does it follow content expiration rules?
sroussey
on Sept 29, 2020
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In my tests using Gmail website, I see the read receipts right away.
bigiain
on Sept 30, 2020
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Do you see them the second or third time you open the mail?
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