Install xul-ext-exteditor by entering the following commands in the terminal:
sudo apt update sudo apt install xul-ext-exteditor
Description:
edit Icedove messages in an external editor
Use any external editor, e.g. Emacs, to edit Icedove messages by pressing ctrl+e. . tbemail.el, a syntax highlighting mode for Emacs, is added for convenience.
Homepage: http://github.com/exteditor/exteditor/
Version: 1.0.2-1
Section: universe/mail