Rated 4 out of 5 stars

Useful, but I thought the Get/Send button would do the same thing as File -> Offline -> Download/Sync Now... (with the go offline not checked). But it doesn't sync all folders. I'm not sure, exactly, which, but it is MUCH faster than Download/Sync and, I know, Junk is not synced.

This review is for a previous version of the add-on (3.9.1).