If you love the #Firefox Translations add-on as much as we do and find yourself thinking "this should REALLY come to Thunderbird," then this bug is worth keeping an eye on:
https://bugzilla.mozilla.org/show_bug.cgi?id=1823007
https://bugzilla.mozilla.org/show_bug.cgi?id=1823007
1823007 - Support the Firefox Translations add-on in Thunderbird
NEW (nobody) in Thunderbird - Add-Ons: General. Last updated 2023-03-30.bugzilla.mozilla.org