| This is easy to test. You will find images are NOT retrieved by Google's proxy before or after opening the email when you have external images turned off in Gmail. 1) Ensure Gmail is set to "Ask before displaying external images". 2) Send yourself an HTML email with an img tag pointing to a site you control (doesn't even need to be a real image). 3) Check your server log to see if the img url was retrieved. 4) Open the email in Gmail, but don't click "Display images". 5) Check your server log again. 6) In Gmail click "Display images" and check the server log again. Only when explicitly clicking "Display images" does GoogleImageProxy fetch the image. Conclusion - don't install an extension that can spy on everything you do. Just ensure external images are not displayed by default. |