Good idea! Rated 4 out of 5 stars

I am a Linux user, and none of the minimize extensions I tried worked well, so Thunderbird is always open in a specific desktop. The problem is that I miss new mails... Well, not anymore with this extension! Great work!

One question, though: actually, the popup box isn't refreshed, meaning that if I receive a new mail while the popup is already showing, it will continue to show the "old" new mail, it would be great if all new mails were shown.

This review is for a previous version of the add-on (1.0.0).