Review for Folder Pane View Switcher by Jo
Rated 4 out of 5 stars
I couldn't do without.
But I could do without a few of the views. <br>If you add a drop-down list with all views, so I could jump from one view to the other instead of cycling around, I'd be happy.
The Thunderbird devs added the drop-down list you asked for -- I get no credit for that! -- but the current version of the add-on now adds the ability (in the add-on preferences) to select which views are active in the menu and/or arrows.
To create your own collections, you must have a Mozilla Add-ons account.