Review for Remove Duplicate Messages by Firefox user 3fe0cb
Rated 5 out of 5 stars
I created a Mozilla account just to rate this add-on. I migrate email from PC to PC; from ghost image to ghost image on a weekly basis. As a result, I wind up with duplicate emails galore.
Simply put - this add-on WORKS and it works FLAWLESSLY. It's lightning fast and intuitive.
5 Stars!
To create your own collections, you must have a Mozilla Add-ons account.