Through Breezi you can only manage one site per account currently. If you need additional sites, please sign up for a new account per site you need.
Since you need a separate email address per Breezi account, here’s a little trick if you use Gmail – you can simply append your email address with “+1″ at the end (for example, if my email address is “email@example.com” I could use “firstname.lastname@example.org” and it will still forward all emails to my normal email address. You can keep appending “+2″, “+3,” etc. for as many sites as you need.