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Work with Us

Come work with the Thunderbird team on the most popular open source desktop email client in the world. We are a distributed team comprised of people spread across the globe working on decentralized communication technology based on open standards.

What is Thunderbird? Software made to make email easier.

Thunderbird is a free and open source email, newsfeed, chat, and calendaring client, that’s easy to set up and customize. One of the core principles of Thunderbird is the use and promotion of open standards - this focus is a rejection of our world of closed platforms and services that can’t communicate with each other. We want our users to have freedom and choice in how they communicate.

We are a fully remote and distributed team. You will work with staff and community members from all over the globe. We are key contributors to open source, allowing you to show your skills to the world and learn from a diverse community.

How to Apply

If a position sounds like a good fit for you, apply on the Mozilla career portal using the "Apply Here" button below each position. All Thunderbird jobs appear under the Mozilla Foundation and will include Thunderbird in the job title.

A cover letter is essential to your application! Tell us about why you’re passionate about Thunderbird and this position. Also include samples of your work, either directly or as a link. If you contribute to any open source software, or maintain a blog we’d love to hear about it!

The successful applicant will be hired through MZLA Technologies Corporation, a subsidiary of the Mozilla Foundation. By applying to our jobs, you are agreeing to have your application reviewed by Thunderbird contractors and volunteers who are a part of the hiring committee as well as by staff members at the Mozilla Foundation and companies under its umbrella.

Get Involved

Thunderbird is an open source project, which means anyone can contribute ideas, designs, code, and time helping fellow users.

Join Us

Make a Donation • Get Support • Report a Bug

Thunderbird

Thunderbird is a free email application that’s easy to set up and customize - and it’s loaded with great features!

The Future of Thunderbird

Experience cutting edge features. Provide feedback to help refine and polish what will be in the final release.

Thunderbird Daily

Help us test the newest developments made to Thunderbird every day by using the unstable Daily channel.

WARNING! Daily is an unstable testing and development platform, make sure you back up important data regularly!