Use iCloud Mail to send and receive email with up to 5 custom domains. You and your family members can each have 3 email addresses per domain.
To enable custom email domains, subscribers will need to visit beta.icloud.com. Choose Custom Email Domain from iCloud Settings.
When adding a domain Apple asks you to choose whether if only you or family members are allowed to add email addresses.
Please download the iClarified app or follow iClarified on Twitter, Facebook, YouTube, and RSS for further updates on availability.