Nice work! Rated 5 out of 5 stars

Thank you! Saved me a ton of manual click labor :).
Installed without problems.
My IMAP is limited to 4GB and mails are getting bigger and bigger. To save mails offline, I created a local Archiv-Folder,
set Autoarchive to 90 days - and on next Thunderbird start the mails started flowing into the preset yearly folders.
Simple, easy, no errors so far.

This review is for a previous version of the add-on (0.1.1).