*Note
All yearly prices have already contained 10% off vs. (monthly price x 12);
Cost of a incremental email box for upgrade will be based on the monthly price, you are recommend to choose enough number of mail boxes when purchase;
Formula: incremental cost= (monthly cost x 12) x (rest days of exsisting boxes / 365);

Reseller Case Scenario:

A reseller who has about 10000 domain names under management, conservatively assume 10% of the domain owners need to setup business group mail with the domain names (assume 10 boxes/domain), then the yearly revenue for a Platinum reseller will be: $25.99x70%x10x10000x10%=$181,930!