An `user.js` is a configuration file that can control hundreds of Thunderbird settings. For a more technical breakdown and explanation, you can read more on the [overview](https://github.com/HorlogeSkynet/thunderbird-user.js/wiki/1.1-Overview) wiki page.
The Thunderbird `user.js` is a **template** which aims to provide as much privacy and enhanced security as possible. It differs from the `ghacks user.js` in that the focus is to keep Thunderbird as an **email client** and disable as many web browsing features as possible. We believe web browsing should be done in a web browser, and not an email client.
- If you're using Thunderbird with Tor we suggest that you install the [TorBirdy](https://addons.thunderbird.net/addon/torbirdy) add-on. If you are using Tor, you should also consider using [Tails](https://tails.boum.org/) or [Whonix](https://www.whonix.org/).
- For information about [extensions](https://github.com/HorlogeSkynet/thunderbird-user.js/wiki/4.1-Extensions), see the Wiki. **Calendar** users should [see this page](https://github.com/HorlogeSkynet/thunderbird-user.js/wiki/4.1.1-Calendar).
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Also be aware that this `user.js` is made specifically for Thunderbird and has only been tested in the latest stable release.
* [tya99](https://github.com/tya99) most of the ground work and initial port from the Firefox version of [ghacks user.js](https://github.com/ghacksuserjs/ghacks-user.js)
* [dngray](https://github.com/dngray) continual maintenance and Wiki
