Try Blue Mail. It supports:
- Gmail, Yahoo, Outlook, AOL, iCloud, Office365, Google Apps, Hotmail, Live (Live.com), GMX, Web.de and any other IMAP mailbox.
- Exchange (via IMAP protocol)
- Custom IMAP/SMTP mailbox config
- Sync multiple mailboxes from various providers in a unified interface
- Push email support
- notifications per account with Quiet Hours, Custom Sounds, Vibrate option, LED and other preferences
- Smart Conversations
- Customized number of days to sync for offline availability
And in "More > Global settings" you can choose to either jump to next mail or back to mail list.
Using it myself since a few days and realy like it.