Rated 5 out of 5 stars

Great tool, using it daily!
I had problems with the shortcuts after the latest Thunderbird update to 15. But I gladly discovered the option "Force use of legacy shortcuts" (in "Add-ons Manager > Quick Folder Move > Options"), which allows me to use the keyboard short-cut "Shift+m" again to open the selection window!

This review is for a previous version of the add-on (2.7.0).