How to see - and block - who's tracking your emails

From marketers to nosy friends, you can be sure that some portion of your emails - or, at least, the actions you take in regards to emails sent you - are being tracked. Using a method called pixel tracking, the people and companies clogging up your inbox can see not only whether or not you're opening their emails, but also how many times you open them, where you're located when you do, and the device you use. Creepy? We agree.

This is a companion discussion topic for the original entry at