|Developer(s)||Jesse Vincent and contributors|
|Stable release||5.006 / June 9, 2015|
|Operating system||Android, Blackberry 10 (Version 4.317)|
|License||Apache License 2.0|
K-9 Mail is an independent mail application for the Android operating system. It is made available as Free/Open Source Android Software under the Apache License version 2.0. The program is marketed as a more functional replacement for the default mail application included on most phones. It supports both POP3 and IMAP mailboxes and provides push notifications with IMAP.
The source code was first published to its git repository on October 27, 2008 by Jesse Vincent (user obra on github) and the first binaries were released to the public on the Google Code site the same month.
- Works with IMAP, POP3 and Exchange 2003/2007 (with WebDAV) accounts
- Folder Sync
- Encryption with APG/OpenKeychain support
- SD Card Storage
This application has been downloaded from the Google Play Store between 5 million and 10 million times since its release and has been rated by over 40,000 people with either 4 or 5 stars. It has been widely reviewed and praised in the media as a replacement for the default mail application.
- "k9mail/k-9". Github. Retrieved 1 September 2013.
- "Downloads - k9mail - K-9 Mail is an advanced email client for Android - Google Project Hosting". Code.google.com. Retrieved 2013-08-15.
- Paul, Ryan (2011-01-24). "Excellent K-9 mail app for Android keeps your messages on a leash". Ars Technica. Retrieved 2013-08-15.
- "K-9 Mail v4.406 (K9Mail) update19 07 2013 Android Apk". MrCrab.Net. Retrieved 1 September 2013.
- "K-9 Mail Review". YouTube. 2010-07-12. Retrieved 2013-08-15.
- "K-9 Mail Receives First Significant Update In 9 Months - Improved Interface, Altered Widget, Bug Fixes, And More". Androidpolice.com. 2013-06-28. Retrieved 2013-08-15.