1. An e-mail system comprising: a server connected to a network; and a Mail Alert code set resident and operable on the server; wherein the Mail Alert code set is adapted to alert a subscriber by a message to the subscriber's pager, the message not including content of the e-mail, that e-mail has been received, and to await forwarding instructions from the subscriber before forwarding the e-mail, then to forward the e-mail to a destination instructed by the subscriber; and wherein the Mail Alert code set is adapted to filter incoming e-mail documents, including parsing the message portion of the e-mail for content, according to prestored document characteristics and to alert the subscriber at the second destination only on finding a characteristic match.