Definitely looks like some tricks can be blocked. But no mention of how it'd affect the classic technique of having a single pixel image with a unique URL (Per

Definitely looks like some tricks can be blocked. But no mention of how it'd affect the classic technique of having a single pixel image with a unique URL (Per user) so that you can track opens. I'm assuming at this point that that would still work. But as mentioned in the Movable Ink article all sorts of other tracking and image request headers are lost.