Our Hosted Exchange Email service does include features which are similar to an Email Alias.
You can set up a Distribution List
if you have 1 or more Professional Users. A Distribution List will
allow you to forward email from one email address to one or more active
Exchange accounts within the same domain name. Hosted Exchange Email
POP3 or Professional users are allowed to be members of an Distribution
List, but only a Professional User can be the owner. To set up a
distribution list or for more information on managing your Distribution
Lists, please visit the Admin Management area of your account and click on "Manage Distribution Lists".
Professional users can also use the Alternate Email Address feature to set up an Email Alias within their domain. You can create an email address like firstname.lastname@example.org which will point to email@example.com.
Adding External Email Addresses to the Global Address List
After logging into your control panel, click on Exchange. In the Admin Management section click on Manage Global Contacts.
From this section you can update and add any contacts that you want to
appear in your Global Address List either through Outlook or Outlook Web