If your email is hosted by Paubox and you have a Paubox admin account, you can add new users on iRedAdmin.
1. Login into your Paubox Admin page using your Paubox email address and password
2. When you login, at the top in the navigation bar hover your mouse over +Add and click on Users
3. Fill in all the required information, leave the preferred language and mailbox quota alone. Then hit Add.