Improved in recent version Older versions had some bugs not present I'm mainline k9. Recent version fixed them but "start in unified inbox" is required.
Doesnt work Simply won't connect to my exchange server. The native Android client works just fine with same settings
Add search options? On Nexus 7 I'm unable to search email since missing a search button/option. Add search and the app gets 5 stars!
Uses too much data Used more than 700MB of data in one day. Please fix this.
Problems Good, but incredible battery eater. Waiting for a fix
Old version of k9 Worth 5 stars to update version of k9
1.2.3: upgrade to official K9 4.120
1.2.2: fix invalid message bug
1.2.0: upgrade to official K9 4.1