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K-9 Mail 23.0

10.3 MB APK

Android Platform: arm64-v8a, armeabi-v7a, x86, x86_64

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Antivirus & safety scan results

Scan Date: Sep 9, 2026 Software Version: 23.0

Status: ✅ Trusted & Safe to install This app is signed by thundernest with trusted and verified digital signature and it will updated existing K-9 Mail installations Certificate fingerprint: 4bd9ea785dbbb1325c11f6889e90be0c7cc7b826 Issuer: CN=Android Team, OU=Mobile, O=MZLA Technologies Corporation, L=San Fransisco, ST=California, C=US How we verify APK files security

APK file specifications

Package Name	com.fsck.k9
Requirements	Android 6.0 (Marshmallow API 23)
Version Code	31
Software Version	23.0
APK Size	10 MB
Source Code	https://github.com/thundernest/k-9
License	Apache-2.0
File Type	APK
Screen DPI	160dpi, 240dpi, 320dpi, 480dpi, 640dpi
Permissions	16
Author	thundernest
Categories	Communication

Android Permissions

This app requests the following permission from the Android OS:

android.permission.CAMERA
android.permission.READ_CONTACTS
android.permission.VIBRATE
android.permission.INTERNET
android.permission.WAKE_LOCK
android.permission.USE_BIOMETRIC
android.permission.USE_FINGERPRINT
android.permission.FOREGROUND_SERVICE
android.permission.POST_NOTIFICATIONS
android.permission.READ_SYNC_SETTINGS
android.permission.ACCESS_NETWORK_STATE
android.permission.SCHEDULE_EXACT_ALARM
android.permission.RECEIVE_BOOT_COMPLETED
android.permission.FOREGROUND_SERVICE_DATA_SYNC
android.permission.FOREGROUND_SERVICE_SPECIAL_USE
net.thunderbird.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

* permissions in red may affect your privacy ! (read more)

Installing K-9 Mail APK

Tap on K-9 Mail .apk
Allow installation from Unknown Sources
Hit the Install button
Follow the onscreen instructions

* For more information check our Help Documentation

Version History

21.1 APK

August 12, 2026

21.0 APK

July 20, 2026

20.0 APK

June 23, 2026

Latest Version of K-9 Mail for Android