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Isn't Gmail serving image from it's own proxies acting as a protection against this kind of snooping? In my understanding, opening the image loads the image fr

• teej 12y ago
  This only prevents device and IP information from being broadcasted. The main information the email sender still gets is if the email was opened at all.
• mike-cardwell 12y ago
  It still leaks whether or not you viewed the email and what time, even if it doesn't leak the IP you came from. Also of note: Fastmail also uses proxies in this fashion too now.
  • pyre 12y ago
    > what time Not necessarily. Does Google cache the image when receiving the email, or when you view it?
    • mike-cardwell 12y ago
      Google only fetches the image when you first view it. At least it did when I tested it when they first started doing it.
      • talkingquickly 12y ago
        That still seems to be the behaviour, so it still works for open tracking just not the additional meta data. Fantastic tool you've created by the way!
    • deleted 12y ago
      [deleted]
    • ppadron 12y ago
      I haven't tested it yet, but it seems you can setup your tracking image to return a "Cache-Control: no-cache, max-age=0" header and it will always be reloaded when the email is opened. http://blog.movableink.com/real-time-content-and-re-open-tracking-return-to-gmail/ http://blog.movableink.com/real-time-content-and-re-open-tra...