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Looks like gmail proxies the images via https://ci5.googleusercontent.com/proxy/ https://ci5.googleusercontent.com/proxy/. I don't see an issue, gmail is alread
by free652 13y ago
Looks like gmail proxies the images via https://ci5.googleusercontent.com/proxy/ https://ci5.googleusercontent.com/proxy/. I don't see an issue, gmail is already tracking me, but the sender can't track me.
- blazingice 13y agoDoes the fetch happen immediately when Google receives the email? Or does it occur the first time the user opens the email? If the latter, sender image tracking will be alive and well.
- deleted 13y ago[deleted]
- untog 13y agoYes they can. All I need to do is <img src="image.jpg?userid=123456"/> and I can tell whether you opened it or not. Google could strip out query strings in their proxy, but I'm not sure that's a good idea.
- palebluedot 13y agoPresumably Google would cache the image on receipt, not on open. If that is the case, then the sender has no way of knowing if you actually opened the email (unless you do so from a desktop IMAP/POP client).