Communication by electronic computer terminals; Communications by computer terminals; Electronic messaging services; Electronic transmission of mail and messages; Message sending and receiving services; Message sending via a website; Message sending, receiving and forwarding; Transmission of digital files; Data communication by electronic mail; Electronic message sending; Internet based paging and alerting services, namely, providing a web site at which users can send messages to electronic paging devices; On-line services, namely, message sending; Providing electronic transmission of secure e-mail; Providing instant messaging services; Transmission of electronic mail