Rated 5 out of 5 stars

Great extension. Only one problem I ran into was when I tried to export my archives folder using the "Export folder with subfolders (with structure)" option. What resulted was correctly structured, but the bulk of the subfolders didn't have the .sbd extension. In fact, they didn't have any extension at all, so I was unable to use them to put anything in.

This review is for a previous version of the add-on (14.0.1). 

John
Thanks for the nice review!
The sbd is the container folder for subfolders. All the files without an extension are mbox files with the actual messages.
I would certainly like to help if there is any confusion or problems.
Can you post an issue in the github help repository?
https://github.com/thunderbird/import-export-tools-ng/issues
Christopher