Review for QuickFolders (Tabbed Folders) by Steven W
Rated 5 out of 5 stars
QuickFolders is the single most useful add-on I've found. Well thought out. Well executed. A real gem. It is a "must have" for organizing multiple folders and keeping track of messages.
This review is for a previous version of the add-on (3.6).To create your own collections, you must have a Mozilla Add-ons account.