Participe
Thunderbird is an open source project, which means anyone can contribute ideas, designs, code, and time helping fellow users.
Join UsThe Future of Thunderbird
Experience cutting edge features. Provide feedback to help refine and polish what will be in the final release.
Thunderbird Nightly
Help us test the newest developments made to Thunderbird every day by using the unstable Nightly channel.
WARNING! Nightly is an unstable testing and development platform, make sure you back up important data regularly!