Download Beta in your language

Be one of the first to try the newest features in Thunderbird. By giving us your feedback, you’ll help us to refine the features that will be included in the final version.

The 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!