Kaiten Mail is a gorgeous and incredibly powerful email client for Android.
• Supports multiple IMAP, POP3, Exchange 2003/2007 (via WebDAV) accounts
• Push mail using IMAP IDLE
• Rich text editing
• Unified Inbox
• Display contact pictures
• Threaded message view
• Split-screen view
• Email signatures
• BCC to self
• Rich notifications (mark as read, reply, or delete directly from notifications)
• Encrypt and sign messages using the OpenPGP standard (when APG is installed)
• Settings import/export
• Keyboard shortcuts
• Lots of configuration options
Please note that Kaiten currently does NOT support Exchange ActiveSync.
If you're having trouble with Kaiten, drop us a line and we'll do everything we can to help you out. We'd love to hear how you'd like Kaiten to improve. Join us at http://kaitenmail.uservoice.com/
Kaiten is based on the popular open source app K-9 Mail and was built by K-9's lead developers Jesse and Chris. By buying Kaiten you not only get an awesome email client, you also support the open source version because almost all of the new features are contributed to K-9 Mail.
The name is a play on K-9. Kaiten is a Japanese word that means rotation and sounds a lot like K10 or K-10.