Multiple Email Accounts

[zulu]

One question which I'm sure has been asked before but I've been unable to find with a search....

How do I make my TP2 do what I could do with Blackberry's BIS service? I want to be able to push several email accounts to my device like I could with my 'berry. So far, it's looking like my only option is to enter the pop info in and just schedule send/receive in Pocket Outlook. Are you serious? I'm back to having to poll a server? I need instant gratification and it looks like all a hosted exchange account does is let me aggregate, but I can't change which account I reply from on the fly. Help me Obi Wan!!