3 ms·
Hey's solution is pretty smart. Their servers open the image and cache it as soon as the email goes through their servers. That way the pixel data is garbage. I
by o_m 6y ago
Hey's solution is pretty smart. Their servers open the image and cache it as soon as the email goes through their servers. That way the pixel data is garbage. If you open the email multiple times it gets the images from Hey's cache.
- soheil 6y agoInterestingly enough this is also what gmail does, however, then they notify the origin server on every email open even though they're serving the cached version, pure evil.