Yes, you can set up as many email aliases as you need. Additionally, you can set up as many domain aliases as you need. Login to https://webmail.infosaic.com
as the email administrator and click on Settings to add email aliases.
If you want to add domain aliases, login as administrator. Next, click on Settings and go to Domain Settings/Advanced Settings. Here you can add additional domain name aliases. Please note you will also need to add these domains in the hosting control panel under Web Server Administration/Domain Aliases and that the domains will need to be pointed to our name servers.