Review for Extra Folder Columns by sleepyalf
Rated 3 out of 5 stars
would have been 4 or 5 stars except
- causes a cosmetic issue with smart folders when you have >1 email account. Normally when View/Folders/Smart is on you see one Inbox with sub-inboxes labelled with the names of each account. When this add-on is enabled these sub-inboxes are all called 'Inbox'. Same issue with Junk and Deleted. The issue seems purely costmetic
To create your own collections, you must have a Mozilla Add-ons account.