Originally Posted by
Loren Pechtel
No. What Google is actually doing is cacheing those images on it's servers when the mail comes in. When you view the message you actually see what's on their server.
This only lets the sender know the message was received by Google, not that it was actually looked at.
No, they are caching it the first time you access the email.
It's still causing pain for marketing/tracking images, because although they can tell you opened the email, they are not seeing many of the details that are normally visible (user agent/device time, IP address, etc).
There's a number of sites tracking the impact of these changes on email - such as
http://blog.wordtothewise.com/2013/1...gmail-caching/