Review for Remove Duplicate Messages by Andrew P.
Rated 1 out of 5 stars
The May 6, 2023 update has absolutely broken the Remove Duplicate Messages add-on. It runs forever on a folder with just one or two dozen messages, none of them duplicate, and no longer reports "no duplicates found". So sad. It used to be a valuable tool.
This review is for a previous version of the add-on (0.5.3.1).To create your own collections, you must have a Mozilla Add-ons account.