Benvingut a complements de Thunderbird.
Add extra features and styles to make Thunderbird your own.
Tanca![Icon of Mozilla Labs - Jetpack Prototype](https://addons.thunderbird.net/user-media/addon_icons/12/12025-64.png?modified=1470953689)
Mozilla Labs - Jetpack Prototype 0.8.2 Requires Restart
per Mozilla Labs
Jetpack Prototype is an experiment in making it easy to build Firefox add-ons using common web technologies.