This project is based on Stationary v1.0.0 from 2018, a legacy add-on created by Łukasz Płomiński.
The used locale strings were originally provided by
* Sven Giermann (de)
* Jean-Bernard Marcon (fr)
* mar Babelzilla community member (jp)
* Łukasz Płomiński (pl)
* Luiz Bettoni (pt-BR)
* Carlos Simão (pt-PT)
* Mikael Hiort af Ornäs (sv-SE)
* HeartBlade (zh-CN)
* strel Babelzilla community member (es)
The HTML Source Editor add-on is a modern WebExtension and allows to edit the source of the currently composed message.
The most recent version of this add-on is available on addons.thunderbird.net