Download Thunderbird Beta for Testers (f-droid version) APK 12.1 arm64-v8a, armeabi-v7a, x86, x86_64 · Android 21+
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This is the arm64-v8a, armeabi-v7a, x86, x86_64 build of Thunderbird Beta for Testers (f-droid version) 12.1. Pick this build if your device's primary ABI matches.
File size: 12.2 MB • Min Android: 21 • Target Android: 35 • Version code: 39028 • Framework: Native (Java/Kotlin) • Permissions: 17
Screenshots
File Information
| Package Name | com.fsck.k9 |
|---|---|
| Version Name | 12.1 |
| Version Code | 39028 |
| Architecture | arm64-v8a, armeabi-v7a, x86, x86_64 |
| Min Android Version | Android 21 (API 35) |
| Main Activity | com.fsck.k9.activity.MessageList |
| Framework | Native (Java/Kotlin) |
| File Size | 12.20 MB |
| Signature (SHA1) | 0F1F3252CBA1C94DDD6186DAD5A035E96C6EE5E3 |
| File Hash (SHA256) | 86dd6bc1025cdfebe49daf2cfdabc19800b765b6983b23e8796fbbd2b5aef6e5 |
What's New
- Selected/read/unread message states were hard to distinguish visually
App Description
K-9 Mail is an open source email client that works with basically every email provider.
Features
* supports multiple accounts
* Unified Inbox
* privacy-friendly (no tracking whatsoever, only connects to your email provider)
* automatic background synchronization or push notifications
* local and server-side search
* OpenPGP email encryption (PGP/MIME)
Install the app "OpenKeychain: Easy PGP" to encrypt/decrypt your emails using OpenPGP.
Support
If you're having trouble with K-9 Mail, ask for help in our support forum at
forum.k9mail.app
Want to help?
K-9 Mail is now part of the Thunderbird family and remains a community developed project. If you're interested in helping to improve the app, please join us! You can find our bug tracker, source code, and wiki at
github.com/thunderbird/thunderbird-android
We're always happy to welcome new developers, designers, documenters, translators, bug triagers and friends.
Features
* supports multiple accounts
* Unified Inbox
* privacy-friendly (no tracking whatsoever, only connects to your email provider)
* automatic background synchronization or push notifications
* local and server-side search
* OpenPGP email encryption (PGP/MIME)
Install the app "OpenKeychain: Easy PGP" to encrypt/decrypt your emails using OpenPGP.
Support
If you're having trouble with K-9 Mail, ask for help in our support forum at
forum.k9mail.app
Want to help?
K-9 Mail is now part of the Thunderbird family and remains a community developed project. If you're interested in helping to improve the app, please join us! You can find our bug tracker, source code, and wiki at
github.com/thunderbird/thunderbird-android
We're always happy to welcome new developers, designers, documenters, translators, bug triagers and friends.
Download Thunderbird Beta for Testers (f-droid version) APK
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APK Permissions 17
- android.permission.ACCESS_NETWORK_STATE
- android.permission.CAMERA
- android.permission.FOREGROUND_SERVICE
- android.permission.FOREGROUND_SERVICE_DATA_SYNC
- android.permission.FOREGROUND_SERVICE_SPECIAL_USE
- android.permission.INTERNET
- android.permission.POST_NOTIFICATIONS
- android.permission.READ_CONTACTS
- android.permission.READ_SYNC_SETTINGS
- android.permission.RECEIVE_BOOT_COMPLETED
- android.permission.SCHEDULE_EXACT_ALARM
- android.permission.USE_BIOMETRIC
- android.permission.USE_FINGERPRINT
- android.permission.VIBRATE
- android.permission.WAKE_LOCK
- com.android.vending.BILLING
- com.fsck.k9.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
APK Verified
The cryptographic signature guarantees that the file is safe to install and was not tampered with in any way.
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Frequently Asked Questions about Thunderbird Beta for Testers (f-droid version) APK
This variant is built for devices that report `arm64-v8a, armeabi-v7a, x86, x86_64` as their primary ABI. If your device's CPU matches, this is the smallest, fastest version to install.
Yes — the APK's signature has been cryptographically verified against the publisher's signing key. The SHA-256 hash is shown in the File Information panel so you can independently confirm the file matches the original release.
Android 21 (API level 35) or newer. Older devices will refuse the install.
Install a free app like 'CPU-Z' or 'Droid Hardware Info' from the Play Store and look at the ABI / Instruction Set row. Most phones made after 2017 are arm64-v8a; if in doubt, download the universal variant.
All variants are functionally identical — same features, same version. They differ only in which CPU architectures the native code is compiled for, and (sometimes) which screen densities the included graphics target. Pick the one that matches your device for the smallest install size, or pick 'Universal' if you're unsure.