iCloud: Set up iCloud Mail on your devices and computers
After you set up an @icloud.com email address for your iCloud account on a device, iCloud Mail is ready to use on that device. To use iCloud Mail on other devices, you must turn it on on each of those devices.
Set up iCloud Mail on Mac
Choose Apple menu > About This Mac, then note your OS X version.
It should say “Version 10.7.5” or later.
Choose Apple menu > System Preferences, then click iCloud and sign in with either your Apple ID (the one you use with iCloud) or your @icloud.com email address.
Select the Mail checkbox (or Mail & Notes in OS X v10.7.5).
Set up iCloud Mail on an iOS device
Your device must have iOS 5 or later installed.
Tap Settings > iCloud, and sign in with either your Apple ID or your @icloud.com email address.
Tap to turn on Mail.
Set up iCloud Mail on Microsoft Outlook 2010 or Microsoft Outlook 2007
Open the iCloud Control Panel, select (to turn on) the Mail, Contacts, Calendars, & Tasks checkbox, then click Apply.
To open the iCloud Control Panel in Windows 8, move the pointer to the upper-right corner of the screen to show the Charms bar, click the Search charm, then click iCloud Control Panel on the left.
To open the iCloud Control Panel in Windows 7 or Windows Vista, choose Start menu > All Programs > iCloud > iCloud.
Your iCloud Mail account is displayed in the left column of Microsoft Outlook.
To view your iCloud Mail account in Microsoft Outlook, click the disclosure triangle to the left of your iCloud email account.
Set up iCloud Mail for third-party email applications
For more information about how to set up applications such as other versions of Microsoft Outlook, Windows Vista Mail, or Microsoft Entourage, go to iCloud Mail server information for third-party email applications.
For information about using a web browser instead of an email application to access your iCloud Mail messages, go to Read email.