You would typically install Net. This allows you to share a single access point to the Internet. You can install Net. To make the most of Net. Point MX for sending and receiving their e-mail.
All users can receive copies of incoming mail based on e-mail address or their aliases.
Also, a user can receive mail addressed to a range of e-mail addresses. Point MX can retrieve mail from all accounts concurrently - automatically receive copies of mail sent to other users Net. Point MX can be configured to always send copies of incoming messages to any number of users - be assigned Post Master any one user can be the Post Master. The Admin user is Post Master by default.