Download Thunderbird Beta for Testers
22.0b2
Updated Jul 27, 2026
Mozilla Thunderbird4.24100K+ installs
All packages
Old versionsThe architecture must match your device's CPU.
How to install
On Android
- Install an APKS installer app from the Play Store.
- Open the installer app.
- Tap Install and select
Thunderbird-Beta-for-Testers_22.0b2_apkcube.apk. - Tap OK and wait for the installation to complete.
On Windows
- Download and install an Android emulator on your PC.
- Open the emulator and sign in.
- Drag
Thunderbird-Beta-for-Testers_22.0b2_apkcube.apkinto the emulator window. - Wait for the install to finish, then launch the app.
Before you install: Android will ask you to allow installs from unknown sources, Play Protect may show a warning even on clean files, and sideloaded apps won't update automatically. XAPK and APKS bundles also need a dedicated installer app. Sideloading guide →