[daphneokeefe]

I use a browser extension on Chrome called PixelBlock to (hopefully) kill those email tracking pixels. The extension displays a small icon on emails where blocking occurred.

This is the description supplied for the extension: "PixelBlock is a Gmail extension that blocks people from tracking when you open their emails."

[onreact]

Yeah, but this is about the Internet as a whole not just Gmail IMHO. You need more than that extension to block it then.

I use Privacy Badger by the EFF. They block all kinds of tracking.

Also using Firefox will prevent Browser fingerprinting and such.