Rated 3 out of 5 stars

Από τον/την ggbal στις Δεκ. 17, 2019 · μόνιμος σύνδεσμος

It seems to detect the duplicated message. But as a previous reviewer pointed out, I can't find the preference menu in either Thunderbird/Preference nor in Toos/Add-on Preference.

TB 68.3.0 in macOS 10.13.6