There was a lot of confusion about this, at first. People didn't know if Google just fetched th images right away, or on opening the email, or what. If the form

There was a lot of confusion about this, at first. People didn't know if Google just fetched th images right away, or on opening the email, or what. If the former, unique tracking would be dead and the most information marketers would get was that the address was valid. So, it's been nice to have people shake out the real impact of this change, thanks.