Releases Thunderbird release notes are specific to each version of the application. Select your version from the list below to see the release notes for it.

Thunderbird is clean and elegant by default, but easily customizable to match your workflow and visual preferences. It is loaded with unique and powerful features.

These are officially maintained and distributed by Thunderbird. Download the latest Release version unless you wish to test the Beta version and report bugs.

Apr 15, 2025 · Thunderbird is a free email application that’s easy to set up and customize - and it’s loaded with great features!

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

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

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

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

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

Jul 12, 2024 · Nebula ushers in significant improvements to Thunderbird’s code, stability, overall user experience, and the speed at which we can deliver new features to you.