Before you can set up an email account, you must add a domain to use with email. When you add a domain to email, you specify how the domain handles email messages sent to an alias account. You create an alias to handle email sent to specific email addresses that do not have accounts associated with them, such as firstname.lastname@example.org or email@example.com. An alias redirects email to an account that you specify. For example, you can set up an alias so that messages sent to "firstname.lastname@example.org" are redirected to your personal account. To create an email alias, see Creating and Modifying Email Aliases.
After you add a domain, a list of common aliases is created. Automatically created aliases include webmaster, security, and info.