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 http://k9mail.googlecode.com.
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 http://k9mail.googlecode.com 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: http://bit.ly/new-k9
(People sometimes call K-9: K9, K9 Mail, K-9 Email, K9 Email, K9 E-Mail, k9mail or k9email.)
Inline attachments are now included in forwarded messages
Quick access to the “What’s new” screen when the app was updated
Close and reopen Push connections when the active network has changed
Fixed a bug that lead to Push not working properly
Fixed some minor bugs
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More Info: https://play.google.com/store/apps/details?id=com.fsck.k9 Download Instructions: