US Patent 7742581 Electronic messaging exchange

A secure electronic message exchange system, including a plurality of workstations, a communications medium, and a control platform coupled to a workstation of the plurality of workstations by the communications medium. The control platform includes one or more apparatuses for monitoring, controlling, converting, and billing related to, messages exchanged between a plurality of local users and a plurality of remote users. The control platform also prevents a forwarding of or a copying of a message, sent by a local user of the plurality of local users and received by a remote user of the plurality of remote users, to another party, where the control platform provides authentication of the remote user.