Rated 4 out of 5 stars

Από τον/την ---kmi--- στις Ιούν. 30, 2021 · μόνιμος σύνδεσμος

It was great add-on. But it is not available on TB78.
There is a fork. It looks good to me.
https://addons.thunderbird.net/ja/thunderbird/addon/auto-address-cleaner-t/