Hi, 

In order to learn more about adding alias please refer the below link.
http://windows.microsoft.com/en-in/windows/outlook/add-alias-account

Pleasecheck the private message below for further assistance.

Note:Please sign in with your email address and password to view the privatemessage.

Youcan also visit Commerce.microsoft.com and sign in with your email address andpassword to get support from the appropriate team. Once you signed in Under the“Subscriptions” tab click on “Contact Support”, then select the product andclick “Customer Support” below the dropdown box, Selecting the phone optionwill give you the appropriate customer service number and support hours.

Thanksand regards

Mubarak