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A comment on Nylas Mail is now free. Parent comment

Re:Nylas Mail is now free by vurpo on Tuesday January 17, 2017 @04:35PM (#13421487)
Gmail automatically downloads and caches images, and loads them from their server instead of from the original remote server, when you read the email.
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Re:Nylas Mail is now free by timdorr on Tuesday January 17, 2017 @10:24PM (#13423715)
That only obfuscates the reader's IP. Gmail respects Cache-Control headers, so it will not cache the image if you tell it not to.
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