Rated 5 out of 5 stars
Awesome extension that really saves me a tremendous amount of time. I have always been looking for a tool that allows to use keyboard shortcuts to quickly move messages around, similar to the way Pine/Alpine did it. And this add-on just does the job!
Just one minor bug that I noticed: When you set the "Restrict folder completion to the current server" option (which is very helpful if you are managing several inboxes), in search result lists or lists of messages grouped by conversation thread, the S key won't work anymore on items in the list. At least no drop-down is shown in that case when you hit any of the S, G or C keys, while in the regular folder view, it does work.
Apart from that, I'm totally happy with the add-on - thanks for the great work!