Reseller Hosting is a hosting package that allows you to create a hosting account to share or sell to websites or people different from the web space and traffic limits you have.
Reseller hosting services are hosted on shared servers as well as shared hosting services from which other users also receive services. That's why Mailbox has created the "Web Hosting Master" package for you.
In the web hosting master package, you can open unlimited hosting and manage all your accounts from a single panel.
It also allows you to offer special extra services to your customers.