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If you made one there, then it's automatically populated to the maill.app on the device. when setting up again, you just go into iCloud enter your apple ID and turn mail on and it automatically sets up the mail account, it's automatcially done it for me on beta 1 and 2 fine. Also iCloud control panel for windows has set up iCloud in my Outlook

how can i use this new account with my mail.app from Snow Leo on my MacBook? not at all?
Do i need to use lion?
 
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