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From this dev.

K-9 Mail

Available in :
**** For folks seeing a performance regression on 4.4 ****

Some longtime users of K-9 have reported incredibly slow message display times in 4.4. We haven't yet gotten our hands on a device that exhibits the problem, so we haven't been able to develop a proper fix. One thing that has worked for everyone who's tried it is so far to long-press on the account name in the Account list and select "Recreate Data" -- This will COMPLETELY ERASE the local copy of your mail and redownload a brand new copy of everything from your server. Be aware that any mail that's on your device but not on your server will be DELETED.


K-9 Mail is an open-source e-mail client with search, IMAP push email, multi-folder sync, flagging, filing, signatures, bcc-self, PGP, mail on SD & more!

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

K-9 is a community developed project.  If you're interested in helping to make the best email client on Android even better, please join us!  You can find our bugtracker, source code, mailing list and wiki at
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 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:

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

iPhone related for K-9 Mail

K-9 Mail was developed for Android by K-9 Dog Walkers

Package name : com.fsck.k9

System permissions : 17 Click here to show/hide list
  • android.permission.RECEIVE_BOOT_COMPLETED
  • android.permission.READ_CONTACTS
  • android.permission.READ_SYNC_SETTINGS
  • android.permission.WRITE_CONTACTS
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.INTERNET
  • android.permission.VIBRATE
  • android.permission.WAKE_LOCK
  • android.permission.WRITE_EXTERNAL_STORAGE
  • com.fsck.k9.permission.READ_ATTACHMENT
  • com.fsck.k9.permission.REMOTE_CONTROL
  • com.fsck.k9.permission.READ_MESSAGES
  • com.fsck.k9.permission.DELETE_MESSAGES
  • android.permission.READ_EXTERNAL_STORAGE
  • android.permission.READ_CALL_LOG
  • android.permission.WRITE_CALL_LOG

I am the developer of this Application !

Screenshot(s) available for K-9 Mail

Availables reviews for K-9 Mail

Discussion(s) about K-9 Mail in our forum

Comments and Ratings for K-9 Mail

Filters :
by A Google User the 9/26/2013

My favorite Android email client! I tried a few different ones when I first moved to Android years ago but once I found K-9 it was my favorite. I've tried a few since but none match up.

by A Google User the 9/26/2013

Unable to install on Lenovo P780.... Download exits with "unknown error code -24 during install"... Can't install it!! Please fix this...! I am on Lenovo P780 (ROW) with JB 4.2.1.

by A Google User the 9/26/2013

New version fast and excellent Vast improvements in the new version. This is still the best mail client out there for Android. The best feature - Unified mailbox. This alone makes it hands down above the rest.

by A Google User the 9/26/2013

Great app

by A Google User the 9/26/2013

Perfect! Checks multiple email accounts! (More than one of each kind) & quickly notifies

by A Google User the 9/26/2013

Use it everyday Any plans to add calendar support for rackspace email?

by A Google User the 9/26/2013

Cool email client app Great app so far using a day. I was tired of using galaxy s4 default email client which gave me hard time coz of reloading deleted messages and when refreshed the old mails popped up as unread. This app seems work great so far.

by A Google User the 9/26/2013

Excellent Great solution for email. Highly Recommended.

by A Google User the 9/25/2013

Great app its the only client I have on my s4 that actually notifies everytime I have a new mail without fail

by A Google User the 9/25/2013

New version not working for TF201 I have an Asus Transformer Prime and I am also seeing the 'does not show body of message' issue on my device as well. I have noticed that I can temporarily get around this when it happens for a single message by hitting the 'Send-Reply' and either reading it below, or discarding, and it will redraw the screen just that once (if I go back to the message list and try to view it again, it shows up as 'blank' again). It's more than a bit annoying. It's never done this before; a fix very soon would be nice...

K-9 Mail for Android was rated by Android Market Users on : 4.3/5


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