About Mozilla Thunderbird Beta (MSIX)
A free and open source email, newsfeed, chat, and calendaring client that is easy to set up.
Mozilla Thunderbird Beta (MSIX) 148.0.6
A free and open source email, newsfeed, chat, and calendaring client that is easy to set up.
- By Mozilla
- Open Source
- Updated Feb 13, 2026
Technical details
| Publisher | Mozilla |
|---|---|
| Version | 148.0.6 |
| Release date | 2026-02-13 |
| License | MPL-2.0 |
| Installer type | msix |
| Architecture | x64 |
| Package ID | Mozilla.Thunderbird.Beta.MSIX |
| Requirements | Windows 10 version 1809 or later |
Install Mozilla Thunderbird Beta (MSIX) from the command line
- Install with Windows Package Manager
winget install --id=Mozilla.Thunderbird.Beta.MSIX -e- Update to the latest version
winget upgrade --id=Mozilla.Thunderbird.Beta.MSIX -e- Uninstall
winget uninstall --id=Mozilla.Thunderbird.Beta.MSIX -e
Frequently asked questions
Is Mozilla Thunderbird Beta (MSIX) free?
Yes. Mozilla Thunderbird Beta (MSIX) is free and open-source software released under the MPL-2.0 license.
What is the latest version of Mozilla Thunderbird Beta (MSIX)?
The latest version is 148.0.6, released on Feb 13, 2026.
Is it safe to download Mozilla Thunderbird Beta (MSIX)?
The download button links to the official installer published on archive.mozilla.org, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 0675fb2b4c151da531913de9b476607b882f6b24d9565a3d29720505fd4ae4ca.
Which Windows versions does Mozilla Thunderbird Beta (MSIX) support?
Mozilla Thunderbird Beta (MSIX) requires Windows 10 version 1809 or later and is available for 64-bit (x64) systems.
How do I uninstall Mozilla Thunderbird Beta (MSIX)?
Open Settings › Apps › Installed apps, find Mozilla Thunderbird Beta (MSIX) and select Uninstall. From the command line, run winget uninstall --id=Mozilla.Thunderbird.Beta.MSIX -e.
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