With the Domain License, only a single mail domain is supported. The user interface for the Domain License is featured here. Since it Web-enables a single mail domain, the user is only required to provide a valid POP3 username/password. Prompting the user for an e-mail address is optionally enabled to support environments where the pop3 account is different from e-mail address. Multiple copies of BrowserExpress with a Domain License can run on the same webserver, each configured and customized to support a unique mail domain.

The Enterprise License supports unlimited users and unlimited mail domains from one web server. If you support multiple mail domains from one web server and/or you wish to provide Webmail services to visitors to your Website with a single BrowserExpress application, the Enterprise License is appropriate. The user interface for the Enterprise License is featured here. Since the Enterprise License supports any mail domain, the user is required to provide a valid POP3 Server, a POP3 username/password, and an e-mail address.