Rated 5 out of 5 stars

--- Dutch, English below here ---
Doet wat het moet doen, wèl even Python installeren en het script activeren. Ook dat leggen ze keurig uit.

Let op: De laatste versie voor Thunderbird versie 78.x staat gek genoeg onder de 'Overige versies' / 'Oude versies'.
Tenminste, nu in december 2020 is dat nog zo...

--- English ---
Does what it should do! You only have to install Python and activate a script.
@McBob and anonymous; Python version 2 or 3 doesn't matter it says, see also the attention note below here.

Attention; The last version for Thunderbird version 78.x is seen as a 'Other version' / 'Old version' so you have to download it there...
At least in December 2020 that is.

This review is for a previous version of the add-on (7.2.3).