I have an HTC Desire and have set up multiple email accounts on it with no trouble. The system works great. The only problem I find with work email accounts (non-gmail or hotmail) is that when I send an email it saves to the sent items folder on the phone but when I go to Outlook and go to the sent items folder there it does not show the sent item. But other than that there are no issues with sending or recieving. I am using 1and1 IMAP for these emails that are having trouble. Has anyone else found a solution to this without downloading an app. I am very used to the system already in Android 2.1.