Betygsatt 5 utav 5 stjärnor

This is an absolutely must have brilliant add-on. Unfortunately since updating to the latest version of Thunderbird (52.0.1), the Arrows to control which Folder Pane is viewed have disappeared.

Denna recension är för en tidigare version av tillägget (1.11). 

UPDATE: The arrows are back in this beta release:

Give it a try!

Original response:

Please read "About this Add-on" at