Review for Search as list by Pragmatist
Rated 5 out of 5 stars
This is the #1 critical add-on from Thunderbird. I left Thunderbird and went to outlook for the few months this add-on stopped working with Thunderbird. I am so happy it works again. This add-on and Quick text are crucial to Thunderbird's advantage over all email clients in existence.
To create your own collections, you must have a Mozilla Add-ons account.