Rated 4 out of 5 stars

per hannesd el ago. 7, 2022 ·

This extension is so great, but it slows down rendering of html email previews.

This review is for a previous version of the add-on (5.11). 

per Realraven (Axel Grude) (desenvolupador) a ago. 8, 2022 ·

I am aware of performance issues (in Thunderbird 102) and am working on it - see issue 283. If you could add some comments there it would be very welcome!:
https://github.com/RealRaven2000/QuickFolders/issues/283