Trocker for Firefox

Trocker for Firefox is a quick and easy browser enhancer that focuses on privacy. It is a tool to detect and prevent any online email tracking.

Trocker for Firefox is thus an open-source and free extension that is available for both Firefox and Chrome. The add-on is resource-light on your system, requires no initial configuration, and makes available and blocks email trackers, small scripts and tools that have dedicated functions to notify the sender whether you have opened an email, clicked on it, etc.

It detects and blocks almost any attempt to track emails.