Add-ons
Wolkom by Thunderbird Add-ons.
Foegje ekstra funksjes en stilen ta om Thunderbird hielendal fan jo te meitsjen.
Slute
Combined Polish and British English spellchecker 1.2.8
troch magnus
This is a bilingual dictionary of Polish and British English. It is designed for users who regularly write in both languages.
Oer dizze add-on
Thunderbird allows only one spelling dictionary per language. If you have another Polish spelling dictionary installed, it should be removed.
