Download Thunderbird
Mozilla's open-source desktop email, calendar, contacts, feeds, and newsgroup application.
155.0Confirm your operating system and architecture
This prerendered copy does not guess between installers because it cannot inspect your device. Use the selector after the page loads, or choose one of the exact catalogued sources below.
Verified 2026-09-07 from Thunderbird official release download.
Recently checked — Checked today; the catalog review window is 45 days. Catalog evidence: Publisher source record. Source ownership: Vendor-provided source.
Thunderbird official sources by platform
Where can you install it?
What-Version labels who publishes or maintains each route. Community routes are useful, but they are not presented as vendor downloads.
Version evidence and catalogued download links are anchored to the publisher-owned source.
Open publisher source ↗System requirements
- macos: macOS 10.15 or later on a supported Apple-silicon or Intel Mac.
- windows: Windows 10 or later. Thunderbird publishes current 64-bit and 32-bit Windows routes but does not label a native ARM64 package.
- linux: A supported 64-bit x86 Linux desktop with the libraries required by the current Thunderbird release.
Does Thunderbird have an Android app or APK?
No verified Android app or APK in the catalog. Thunderbird does not have a verified Android app, Google Play listing, or official APK in the What-Version catalog. Desktop installers for macOS, Windows, and Linux will not run on Android.
Open official Thunderbird websiteFor APK searches, prefer vendor-owned pages, Google Play, F-Droid, GitHub releases, or documentation explicitly linked by the project.
Frequently asked questions
What is the latest Thunderbird version?
Thunderbird 155.0 is the current Release-channel build listed by the official download page, released September 1, 2026.
Should I choose 32-bit or 64-bit Thunderbird on Windows?
Use 64-bit on most current Windows PCs. Choose 32-bit only when the installed Windows architecture or a specific compatibility requirement needs it.
Does Thunderbird support Apple silicon?
Yes. Current Thunderbird supports Apple-silicon and Intel Macs on supported macOS releases.