This is a basic example of how to make a Thunderbird add-on. This repo is the result of tutorial.

• Thunderbird, version 35 to 49.0

• make or a tool to zip a folder

Build your add-on

• on unix systems simply run make

• on windows compress the folder using zip (excluding, .git) into <your add-on name>.xpi

To install it into Thunderbird open the Add-ons page in Thunderbird and drag-and-drop the .xpi into the window.

Congrats, if everything went right you should need to restart Thunderbird to complete the installation and have a date in the bottom right of the status bar.

Legacy extensions

XUL Code snippets