If you have not moved your MobileMe account to iCloud at this time you must have a good reason. Most likely because not all your devices are iCloud compatible. MobileMe email will still be working with non-iCloud-ready devices after June 30th, 2012.
iCloud requires iOS 5, OS X Lion, Windows 7 or Vista SP 2. If you can’t upgrade, you can keep using your mail on incompatible devices.
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