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Communication

What's new in K-9 Mail 10.1

- Server field pre-filled in manual account setup
- Add a menu entry to empty the Spam folder
- 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
- Hide accounts setting now remembered across restarts
- Restart PushService after app update

About K-9 Mail 10.1

K-9 Mail is an open source email client that works with basically every email provider.

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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.

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K-9 Mail 10.1 screenshots (9)

K-9 Mail 10.1 (Android 5.0+)

K-9 Mail 10.1 (Android 5.0+)

K-9 Mail 10.1 (Android 5.0+)

K-9 Mail 10.1 (Android 5.0+)

K-9 Mail 10.1 (Android 5.0+)

K-9 Mail 10.1 (Android 5.0+)

K-9 Mail 10.1 (Android 5.0+)

K-9 Mail 10.1 (Android 5.0+)

K-9 Mail 10.1 (Android 5.0+)

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K-9 Mail variants

Variant

ArchArchitecture

VersionMinimum Version

DPIScreen DPI

(noarch) (Android 1.5+)
Latest: 3.604 on November 6, 2011

(noarch) (Android 4.0.3+)
Latest: 5.007 on December 14, 2015

(noarch) (Android 5.0+)
Latest: 6.904 beta on June 27, 2024

(universal) (Android 4.0.3+)
Latest: 5.600 on September 2, 2018

(universal) (Android 5.0+)
Latest: 10.1 on July 8, 2025

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All versions

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