Rated 3 out of 5 stars

The extension is great when it works, but it suffers from very poorly worded descriptions and instructions, and a confusing menu layout. It is not quite as straightforward to simply export and import mail, there's a lot of strange caveats and gotchas. If you're looking to export an enormous mail account with a lot of folders, you're going to have a frustrating time.

This review is for a previous version of the add-on (10.0.2). 

many of your comments and concerns are very valid. improving or changing the menu system has been on my list for a while. I introduced the first integrated help for the extension focusing on menu descriptions| hopefully found that helpful.
it would be great if you had some specifics that you thought would be most helpful to improve. can you open an issue in the repository?