On: A Clever Way to Tell Which of Your Emails Are Being Tracked

[mike-cardwell]

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 → mike-cardwell]

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!