Rated 5 out of 5 stars

HOW TO IMPORT MAC MAIL'S .MBOX FOLDER AND EMLX FILES

- Open Thunderbird, Right click on "Local folder" on left column, choose "make new folder"
- Right click newly created folder, "ImportExportTools NG" > "Import every emlx files from folder"
- Select folder location. On mac, it should be "\MacHD\Macintosh HD\Users\Username\Library\Mail"
- Done

Do not download useless payware!

This review is for a previous version of the add-on (12.0.2). 

Thanks for the useful note and the review!
Christopher