Rated 4 out of 5 stars

yazan: Darwin4Ever tarih: Ağu. 18, 2023 ·

Great and handy tool !

Just a pity that it can't been used as a dictionary toggle, i.e. clicking a dictionary disables the others instead of having to select a dictionary and having to disable the other(s)

This review is for a previous version of the add-on (3.2.4). 

yazan: beltrachi (Geliştirici) tarih: Ağu. 27, 2023 ·

Hi! Thanks for your positive review! <3

The dictionary toggle interface does not belong to this extension, it's Thunderbird native interface.

Having said that, Thunderbird and this add-on support selecting various languages at once since last year. Maybe you need to update Thunderbird?