Review for Thunderbird Conversations by DotNet Zebra
Rated 1 out of 5 stars
Looked like it might help make things more organized, but actually did the opposite as it had the effect of taking a neat mess and splattering it all over the place like a toddler using an electric mixer on the cat's milk bowl. Had to uninstall it. It altered the layout for single messages that didn't have any conversation to them. It turned on Unified Inbox which means that a single message is no longer in a unique folder within its account but mixed in with a jumble of multiple things.
This review is for a previous version of the add-on (2.11.4).To create your own collections, you must have a Mozilla Add-ons account.