Are you annoyed with mail tracking? Then this simple Firefox extension will help you by blocking mail trackers.
Download Block Mail Track
Known Limitations of Block Mail Track
Block Mail Track by Kavinda Athapaththu is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Based on a work at https://github.com/ksoftlabs/block-mail-track.
Permissions beyond the scope of this license may be available at https://ksoftlabs.com/contact/.