>>Refusing to allow your email client to download any images will prevent it, but will also make a lot of your email unreadable.
That’s a feature, not a bug. Going back to 8-bit ASCII text, no unicode, no (non-uuencoded or ascii) images not only reduces bandwidth requirements AND protects against all this tracking, but also is a measure of how O.G. the user is. Especially when displayed on a proper green screen.
Hehehehehe...a ‘proper green screen’...:)