computer security software; computer encryption software; computer software for protection and security of data, communications, emails, computer networks and applications; Public Key Infrastructure (PKI) software; server software for supporting, sending and receiving email with encryption and authentication; computer server software for administering the access of a plurality of users to email services featuring encryption and authentication; computer software for supporting, sending and receiving email with encryption and authentication; computer software for controlling and managing access by a plurality of users to email services featuring encryption and authentication; software for encrypting/decrypting data, applications, computer files; software for supporting, sending and receiving electronic messages, email, data forms with encryption, non-repudiation verification and authentication; server operating software for administering the secure delivery of electronic messages, email and data forms by a plurality of users