Xpress Mail
I have only found a way to do just one. But on the black jack you can use Xpress mail and then also set up other mail but it does not have push possibilty with out xpress mail.
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Are you planning on using POP mail like Gmail or corp email? If it's pop then you wont need xpress mail and you can set it to update every 15 minutes which keeps my mail box pretty up to date. Xpress mail can be pushed but sometimes it does not work that well so I also have my xpress mail to update every 15 minutes for my work email.
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When you do an email setup outside of xpress mail it gives you the option of POP3/IMAP and outlook email which you can synch if connected. So it might work for you... never had an IMAP
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