I tried most free apps (including K9) but all other apps cost about $30, I am not keen on wasting money on another not working app. So do you guys know a good email/calendar app?
Good Exchange integration
Support for several accounts: Exchange, IMAP, Gmail (unified inbox not needed)
Working calendar integration (ability to accept meetings on the go)
A GUI that doesnt suck
Decent configuration options of sync frequenzy
For these kind of options I would happily spend my money, but I havent found anything yet.