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And even better: You avoid loading any external resources, which both avoids the data leak, and prevents the sender from modifying the content of the received e
by zAy0LfpBZLC8mAC 9y ago
And even better: You avoid loading any external resources, which both avoids the data leak, and prevents the sender from modifying the content of the received email.
- lstamour 9y agoGmail relatively recently changed to intercept images and cache them all for you, preventing the leak. But then, this is Google we’re talking about. I’m sure there’s still a leak, maybe via AMP for Email. (Of course, hyperlinks are also often used for tracking.)
- zAy0LfpBZLC8mAC 9y agoOnly images? So, fonts can still be used to leak and manipulate?
- lstamour 9y agoWell, no, custom web fonts generally aren’t supported by email clients, email within Gmail is sanitized by default. And I stand slightly corrected: by customizing email image URLs, you can apparently track the first open, but not user details (IP address, device, subsequent opens, etc.) https://customer.io/blog/gmail-loading-images.html https://customer.io/blog/gmail-loading-images.html