telecommunication and data communication services, including the provision of secure data and message communication including email communication, the authentication of the source, integrity or other characteristic of communicated data and messages including email, and the facilitation of sending data and messages including email

downloadable software for use in the provision of secure data and nessage communication including email communication, the authentication of the source, integrity or other characteristic of communicated data and messages including email, and the facilitation of sending data and messages including email