Rated 5 out of 5 stars
I used this add-on all the time, but it seems broken since my update to Thunderbird 52 on Fedora. Using Thunderbird without this add-on is barely acceptable for my since I used the arrows all the time to quickly switch between view. Going to the menu is so devious.This review is for a previous version of the add-on (1.11).
The arrows are back in this beta release:
Give it a try!
Please read "About this Add-on" at https://addons.mozilla.org/en-US/firefox/addon/folder-pane-view-switcher/ (the link to the right).