Rated 5 out of 5 stars

I really like how I can make the email or website dark. However, the shortcut for individual sites don't work (shift+alt+A), but the other shortcut for all websites work (shift+alt+D). Also, unlike the add on in Firefox, I don't know where its at in Thunderbird.

Update: Figured it out that it has to be added to the toolbar manually. Good add on here.

This review is for a previous version of the add-on (4.9.39).