Rated 4 out of 5 stars

Από τον/την tibitts στις Οκτ. 15, 2012 · μόνιμος σύνδεσμος

Even though compatibility is advertised for TB10 only, the extension used to work fine through TB16. But the recent dictionary update did create a new category 'Dictionaries' in Add-on Manager. It seems this did break Dictionary Switcher. I'd hope it will be updated soon. It's quite handy and I do use it a lot in Thunderbird.