Thunderbird is a free and open source email, newsfeed, chat, and calendaring client, that’s easy to set up and customize. One of the core principles of Thunderbird is the use and promotion of open standards - this focus is a rejection of our world of closed platforms and services that can’t communicate with each other. We want our users to have freedom and choice in how they communicate.
Publisher’s description
What is Mozilla Thunderbird (ca)?
Mozilla Thunderbird (ca) is an open-source email client program for Windows from Mozilla.
Installation and requirements
Official installers exist for 64-bit and 32-bit as EXE (NSIS). Installation asks for administrator rights. The installer supports unattended (silent) installation.
Updates and version history
The current version is 158.0.1, released on October 20, 2026. 61 versions are listed since February 21, 2024, each with links to its own installer files. That is about 23 releases a year. The last update is less than a month old.
Popularity and file types
On Windows it registers 3 file types, including .eml, .ics and .wdseml. Similar programs include Proton Mail Bridge, Tuta Mail and Pebble.
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Frequent updates (about 23 a year)
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: Mozilla Thunderbird (ca) is an open-source email client tool for 64-bit and 32-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is Mozilla Thunderbird (ca) safe to download?
- The file is served by download-installer.cdn.mozilla.net; check that it is the publisher’s official mirror
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
5A00582B4D99D9C973B865D08B8B2FC579DAB47F51CF39E1384CA9A22E543491· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 61 versions ›61 versions over 3 years · about 23 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 158.0.1Latest | October 20, 2026 | — | 64-bit EXE (NSIS)32-bit EXE (NSIS) |
| 158.0 | October 13, 2026 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 157.0.1 | October 1, 2026 | — | 64-bit EXE (NSIS)32-bit EXE (NSIS) |
| 157.0 | September 30, 2026 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 156.0.1 | September 22, 2026 | — | 64-bit EXE (NSIS)32-bit EXE (NSIS) |
| 156.0 | September 15, 2026 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 155.0.1 | September 9, 2026 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 155.0 | September 1, 2026 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id Mozilla.Thunderbird.ca -e"Thunderbird Setup 158.0.1.exe" /S /PreventRebootRequired=trueRelated guide: How to use winget: install and update apps
Also for other systems
brew install --cask thunderbirdInformation
- Publisher
- Mozilla
- Category
- Email clients
- Licence
- MPL-2.0
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, 32-bit
- Installer
- EXE (NSIS)
- Version
- 158.0.1
- Released
- October 20, 2026
- Added to the catalogue
- October 2, 2024
- Versions listed
- 61
- Updates / year
- 22.9
- Website
- thunderbird.net
- winget ID
- Mozilla.Thunderbird.ca
File types it opens (3)
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is Mozilla Thunderbird (ca) free?
Yes. Mozilla Thunderbird (ca) is open-source software under the MPL-2.0 licence.
Is Mozilla Thunderbird (ca) safe to download?
The download comes from download-installer.cdn.mozilla.net; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Mozilla Thunderbird (ca) with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can Mozilla Thunderbird (ca) be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Mozilla Thunderbird (ca) run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit and 32-bit version through emulation.
Where can I download an older version of Mozilla Thunderbird (ca)?
The versions page lists all 61 versions with links to their official installer files, back to February 21, 2024.
What are alternatives to Mozilla Thunderbird (ca)?
Proton Mail Bridge, Tuta Mail, Pebble, Mailspring and Mailbird. The alternatives page compares them.
