Rated 2 out of 5 stars
It changed the complete looks of my Thunderbird in a way I don't like (which is OK) - and FAILED setting it back to the original state when being uninstalled (which I find EVIL).
I must say: DO NOT TRY THIS IF YOU ARE NOT SURE YOU WANT IT !
Because it will simply overwrite some settings you have done!
EDIT: I change to 2 stars instead of 1 because I got a reply from a developer to my critique. Thank you very much for that.
In reply to the reply: Yes, I agree it is not a big deal to change the settings manually to the former state. But I expect any addon I install to leave as little a trace as possible once I decide to uninstall it (MUST HAVE requirement).
Hi, we're sorry you're unhappy with the experience.
The add-on gives you an introduction page where you would have chosen to apply changes. There's a review option on that page where you can decide not to change various items.
Some of that is not as clear as it could be and we'll be improving that soon.
Also both the add-on homepage and the FAQ reference the fact that if you don't like the alternate folder layout, then you can change it back by using "View > Folders > All".
The uninstall is currently broken because of changes in Thunderbird, and we're also working to improve those to work better.