SNDMSG was an early electronic mail program, chiefly notable because it was used to send what is considered the first networked email.
The three aerial FM radio and television towers are just north along I-694 in Shoreview, the suburb just north of Arden Hills and Roseville on the St. Paul side of the Twin Cities. Telefarm Towers are the pair to the west, and KMSP Tower is to the east.
History of email (Wikipedia) The history of email entails an evolving set of technologies and standards that culminated in the email systems in use today.