K-9 Mail 5.706 beta (noarch) (Android 5.0+) APK Download by Mozilla Thunderbird

Unified Inbox is now opened by default (if enabled)
Back button now opens default folder before exiting the app
Fixed bug where the input area for the message body wasn't growing properly
Keep read position when switching apps
Don't open external links inside the app on old Android/WebView versions
Update "auto BCC" recipients when switching accounts in message compose window
Fixed UI bug where BCC recipient and the date overlapped when viewing messages
Fixed bug that lead to display of inaccurate attachment sizes
Opt out of anonymous WebView metrics collection
Removed automatic display of "What's New" dialog because of display issues
Updated translations

About K-9 Mail 5.706

K-9 Mail is an open source email client with support for multiple accounts, search, IMAP push email, multi-folder sync, flagging, filing, signatures, BCC-self, PGP/MIME & more!

AdvertisementRemove ads, dark theme, and more with

Premium

K-9 supports IMAP, POP3 and Exchange 2003/2007 (with WebDAV).

Install the app "OpenKeychain: Easy PGP" to encrypt/decrypt your emails using OpenPGP.

K-9 is a community developed project. If you're interested in helping to make the most popular open source email client on Android even better, please join us! You can find our bug tracker, source code, mailing list and wiki at github.com/k9mail/k-9
We're always happy to welcome new developers, designers, documenters, bug triagers and friends.

If you're having trouble with K-9, please report a bug at github.com/k9mail/k-9 rather than just leaving a one-star review. We don't mind you telling the world that you're frustrated, but if you use our bug tracker, we have a better chance of fixing whatever's giving you a hard time.

You can find K-9's release notes at: bit.ly/new-k9

(People sometimes call K-9: K9, K9 Mail, K-9 Email, K9 Email, K9 E-Mail, k9mail or k9email.)

Show more Show less

K-9 Mail 5.706 screenshots (9)

Screenshots from version 20.1

K-9 Mail 5.706 beta (noarch) (Android 5.0+)

K-9 Mail 5.706 variants

This release may come in several variants. Consult our handy FAQ to see which download is right for you.

Variant

ArchArchitecture

VersionMinimum Version

DPIScreen DPI

5.706 APK
27006
March 3, 2020

noarch

Android 5.0+

nodpi

Apps related to K-9 Mail

Thunderbird Beta for Testers (f-droid version)

Version:20.1

Uploaded:July 9, 2026 at 10:32AM UTC

File size:10.11 MB

Previous APKs for (noarch) (Android 5.0+) variant

K-9 Mail 6.904 beta (noarch) (Android 5.0+) APK

June 27, 2024

Version:6.904(39004) for Android 5.0+ (Lollipop, API 21)

Uploaded:June 27, 2024 at 6:08PM UTC

File size:10.01 MB

Downloads:309

K-9 Mail 6.903 beta (noarch) (Android 5.0+) APK

June 24, 2024

Version:6.903(39003) for Android 5.0+ (Lollipop, API 21)

Uploaded:June 24, 2024 at 12:55PM UTC

File size:10.00 MB

Downloads:61

K-9 Mail 6.902 beta (noarch) (Android 5.0+) APK

June 21, 2024

Version:6.902(39002) for Android 5.0+ (Lollipop, API 21)

Uploaded:June 21, 2024 at 3:58PM UTC

File size:10.00 MB

Downloads:59

K-9 Mail 6.804 (noarch) (Android 5.0+) APK

June 7, 2024

Version:6.804(38004) for Android 5.0+ (Lollipop, API 21)

Uploaded:June 7, 2024 at 4:18PM UTC

File size:9.75 MB

Downloads:321

K-9 Mail 6.901 beta (noarch) (Android 5.0+) APK

May 15, 2024

Version:6.901(39001) for Android 5.0+ (Lollipop, API 21)

Uploaded:May 15, 2024 at 4:48PM UTC

File size:9.80 MB

Downloads:147

K-9 Mail 6.900 beta (noarch) (Android 5.0+) APK

May 15, 2024

Version:6.900(39000) for Android 5.0+ (Lollipop, API 21)

Uploaded:May 15, 2024 at 2:48PM UTC

File size:9.80 MB

Downloads:24

K-9 Mail 6.803 (noarch) (Android 5.0+) APK

May 10, 2024

Version:6.803(38003) for Android 5.0+ (Lollipop, API 21)

Uploaded:May 10, 2024 at 3:13PM UTC

File size:9.75 MB

Downloads:174

K-9 Mail 6.802 (noarch) (Android 5.0+) APK

April 5, 2024

Version:6.802(38002) for Android 5.0+ (Lollipop, API 21)

Uploaded:April 5, 2024 at 6:25PM UTC

File size:9.71 MB

Downloads:254

K-9 Mail 6.801 (noarch) (Android 5.0+) APK

March 11, 2024

Version:6.801(38001) for Android 5.0+ (Lollipop, API 21)

Uploaded:March 11, 2024 at 1:17PM UTC

File size:9.64 MB

Downloads:214

K-9 Mail 6.800 (noarch) (Android 5.0+) APK

February 29, 2024

Version:6.800(38000) for Android 5.0+ (Lollipop, API 21)

Uploaded:February 29, 2024 at 3:50PM UTC

File size:9.61 MB

Downloads:230

See more uploads...

All versions

K-9 Mail 20.1

July 9, 2026

Version:20.1

Uploaded:July 9, 2026 at 2:02PM UTC

File size:10.57 MB

Downloads:28

K-9 Mail 20.0

June 23, 2026

Version:20.0

Uploaded:June 23, 2026 at 2:13AM UTC

File size:10.11 MB

Downloads:52

K-9 Mail 19.2

June 5, 2026

Version:19.2

Uploaded:June 5, 2026 at 1:37AM UTC

File size:10.56 MB

Downloads:57

K-9 Mail 19.0

May 29, 2026

Version:19.0

Uploaded:May 29, 2026 at 12:34AM UTC

File size:10.05 MB

Downloads:35

K-9 Mail 18.0

April 19, 2026

Version:18.0

Uploaded:April 19, 2026 at 4:14PM UTC

File size:9.94 MB

Downloads:119

K-9 Mail 17.0

March 24, 2026

Version:17.0

Uploaded:March 24, 2026 at 1:32PM UTC

File size:14.01 MB

Downloads:74

K-9 Mail 16.1

February 28, 2026

Version:16.1

Uploaded:February 28, 2026 at 6:54PM UTC

File size:13.36 MB

Downloads:140

K-9 Mail 16.0

February 3, 2026

Version:16.0

Uploaded:February 3, 2026 at 6:14PM UTC

File size:13.36 MB

Downloads:89

K-9 Mail 15.0

January 12, 2026

Version:15.0

Uploaded:January 12, 2026 at 3:40PM UTC

File size:13.29 MB

Downloads:61

K-9 Mail 14.0

December 20, 2025

Version:14.0

Uploaded:December 20, 2025 at 7:58AM UTC

File size:12.93 MB

Downloads:104

See more uploads...

Comments

Download K-9 Mail 5.706 APK

Whoa there!

What's new in K-9 Mail 5.706