Your email administrator account is the first email account which you create under your domain (eg. admin@yourcompany.in). Using this account you can create rest of the business email accounts, buy additional email IDs, assign Rediffmail NG mobile accounts, renew your entire business emails accounts, setup companywide email policies and many more. Once your payment is realized, you will be asked to register your domain and as soon as you book your domain, specify email address for your email administrator account and your email administrator account will get created immediately.