A multi-user e-mail messaging system is described that is interfaced through the Internet and includes a first user group sharing a first server, which first server is interfaced to the Internet. In this system, after an e-mail message has been originated by an originating user of the first user group, the e-mail message is directed onto an e-mail enhancement path, and additional content is added to the e-mail message using the e-mail enhancement path to produce an enhanced e-mail message. Thereafter, the enhanced e-mail message from the e-mail enhancement path to the intended recipient. In one feature, the path taken by an incoming e-mail message is different from an outgoing path taken by an e-mail message sent from the first user group. The outgoing path defined to the intended recipient includes the enhancement path.