Review for Remove Duplicate Messages by sheli
Rated 5 out of 5 stars
Works perfectly in Thunderbird 78.1.1 (64-bit). It's a great time saver and easy to use once you know where to set the options. There are so many criteria to choose from that makes this tool invaluable. I'm ecstatic that it has been updated so soon.
This review is for a previous version of the add-on (0.5b2).To create your own collections, you must have a Mozilla Add-ons account.