Thunderbird Beta for Testers

Aug 11, 2025

Older Versions of Thunderbird Beta for Testers

If you are experiencing issues with the latest version of Thunderbird Beta for Testers due to bugs or incompatibility with your device, downloading an older version can be a practical solution before the app developer fixes the problem. APKPure offers all of the older versions of Thunderbird Beta for Testers that are compatible with various devices and Android systems. Download rollbacks of Thunderbird Beta for Testers for Android. All downloads from APKPure are free from viruses and provide a fast, secure way to get the app version history you need.

All Versions of Thunderbird Beta for Testers

12.0b5(23)XAPKAPKs
Aug 11, 202522.0 MBAndroid 5.0+
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What's new in the version 12.0b5
Updated on Aug 11, 2025
Thunderbird for Android version 12.0b5, based on K-9 Mail. Changes include:
- Crash occurred when attempting to access account general settings
12.0b4(22)XAPKAPKs
Aug 4, 202522.0 MBAndroid 5.0+
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What's new in the version 12.0b4
Updated on Aug 4, 2025
Thunderbird for Android version 12.0b4, based on K-9 Mail. Changes include:
- Testing drawer UI improvements
- Testing new account settings page
- Crash could occur when clicking on a message thread
- Unicode folder names were malformed when using server supporting UTF-8
11.0b5(18)XAPKAPKs
Jul 7, 202521.5 MBAndroid 5.0+
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What's new in the version 11.0b5
Updated on Jul 7, 2025
Thunderbird for Android version 11.0b5, based on K-9 Mail. Changes include:
- TalkBack did not clearly announce contact picture tap action
- IMAP push could fail after losing and regaining network connection
- Fastmail OAuth expired quickly, causing frequent login prompts
- Some providers blocked SMTP connections when HELO hostname was 127.0.0.1
11.0b4(17)XAPKAPKs
Jul 2, 202521.5 MBAndroid 5.0+
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What's new in the version 11.0b4
Updated on Jul 2, 2025
Thunderbird for Android version 11.0b4, based on K-9 Mail. Changes include:
- Don't cover download complete message with navigation bar
- Avoid a crash related to the drawer when device orientation changes
11.0b2(15)XAPKAPKs
May 28, 202521.7 MBAndroid 5.0+
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What's new in the version 11.0b2
Updated on May 28, 2025
Thunderbird for Android version 11.0b2, based on K-9 Mail. Changes include:
- System navigation bar did not correctly blend with message content
- "New Mail Notifications" setting did not persist
- Trailing whitespace in recipient fields caused "Incomplete input" error
- Navigation drawer "Show Unified inbox" setting did not work
- Application could crash after deleting accounts and continuing to use the app
10.0b2(13)XAPKAPKs
May 2, 202519.9 MBAndroid 5.0+
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What's new in the version 10.0b2
Updated on May 2, 2025
Thunderbird for Android version 10.0b2, based on K-9 Mail. Changes include:
- Restrict displaying message search results to internal and system usages
10.0b1(12)XAPKAPKs
Mar 18, 202511.2 MBAndroid 5.0+
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What's new in the version 10.0b1
Updated on Mar 18, 2025
- Account setup prefills server field automatically
- Add a menu enty to empty the Spam folder
- Provide Slovak translation
- Update Gmail OAuth client IDs to Thunderbird for Android
- Preserve the tag when sanitizing HTML content
- Messages and star counts in the drawer update instantly
- The drawer remembers the state of hide accounts
- Restart PushService after app update
9.0b3(11)XAPKAPKs
Dec 14, 202411.1 MBAndroid 5.0+
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What's new in the version 9.0b3
Updated on Dec 14, 2024
Thunderbird for Android version 9.0b3, based on K-9 Mail. Changes include:
- Hyperlink added to Thunderbird website on funding page
- Use autoconfig server after MX lookup for email providers
- Messages are now always marked as read during archiving
9.0b2(10)XAPKAPKs
Dec 2, 202419.6 MBAndroid 5.0+
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What's new in the version 9.0b2
Updated on Dec 2, 2024
Thunderbird for Android version 9.0b2, based on K-9 Mail. Changes include:
- Help text linking to support page added for Gmail login issues
- Funding text updated to be more engaging and appealing
9.0b1(9)XAPKAPKs
Nov 28, 202419.5 MBAndroid 5.0+
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What's new in the version 9.0b1
Updated on Nov 28, 2024
Thunderbird for Android version 9.0b1, based on K-9 Mail. Changes include:
- Account initials now use the display name, improving customizability
- Account icons remain in the same position when selected
- Unified inbox enabled only when multiple accounts are configured
- Push service now starts reliably when expected
- Correct default delete message action for QR-imported accounts. Please check your fetch mail settings!
- Folder drawer updates properly on account configuration changes

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