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Thunderbird Beta Notes

Version 38.0beta, first offered to channel users on May 23, 2015

 

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!