Welcome to Daily

You are using the daily version of Thunderbird, which means you get to experience the absolute newest Thunderbird - fresh out of the build system! But with great power comes great responsibility, we hope you’ll take the time to report bugs and provide feedback on your experience using the daily version and help make the next Thunderbird release as awesome as possible.

Get Support

The Daily release of Thunderbird can be unstable. If you need help setting up an account or learning to do something else in Thunderbird - you can check out our support page. If you believe you are encountering a bug, please use the “report a bug” link below.

Report a Bug

Think you've found a problem with Thunderbird Daily? Create a bug report so that we can make sure it gets solved. Helping us identify and fix bugs makes for a better Thunderbird experience for all.


Thunderbird is both free and freedom respecting, but we're also completely funded by donations! The best way for you to ensure Thunderbird remains available and awesome is to donate so that the project can hire developers, pay for infrastructure, and continue to improve.

Get Involved

Don’t just use the Daily release, help other users and improve the experience! Thunderbird is an open source project, which means anyone can contribute ideas, designs, code, and time helping fellow users. Join us and become a part of the team that creates Thunderbird.

Submit Crash Reports

Please report every crash. The Mozilla Crash Reporter gives valuable data on which crashes are the most serious. And if you are comfortable doing so, please also add a public comment, and supply your email address (which is non-public) to allow us to contact you if we need to.