K-9 Mail

K-9 Mail

  • 8.2

    13 Reviews

  • 10.9 MB

    File Size

  • Everyone

  • Android 6.0+

    Android OS

About K-9 Mail

K-9 Mail is a 100% open source, privacy focused email client for Android

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 https://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 https://github.com/thunderbird/thunderbird-android

We're always happy to welcome new developers, designers, documenters, translators, bug triagers and friends.

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What's new in the latest 24.0

Last updated on 2026-10-07
K-9 Mail version 24.0

New:
- Signatures support HTML
- Reply offers Reply or Reply All

Changed:
- Long account names fit in two lines

Fixed:
- Compose selection invisible in light theme
- Status icons unreadable when selecting messages
- Recipient expander failed to collapse after edit
- Camera attachments could crash the app
- Save All saved each attachment with same file content
- HTML signatures could disappear after rotation
- Edit as new used wrong identity for queued mail
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Videos and Screenshots

  • K-9 Mail poster
  • K-9 Mail screenshot 1
  • K-9 Mail screenshot 2
  • K-9 Mail screenshot 3
  • K-9 Mail screenshot 4
  • K-9 Mail screenshot 5
  • K-9 Mail screenshot 6
  • K-9 Mail screenshot 7

K-9 Mail APK Information

Latest Version
24.0
Android OS
Android 6.0+
File Size
10.9 MB
Available on
Content Rating
Everyone

Old Versions of K-9 Mail

10.9 MBOct 7, 2026
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10.8 MBSep 22, 2026
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10.8 MBSep 9, 2026
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10.7 MBAug 14, 2026
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