Sendmail? No, but they invented the transistor. And UNIX. And introduced the discipline of information theory. Confirmed the wave nature of electrons. Pioneered

Sendmail? No, but they invented the transistor. And UNIX. And introduced the discipline of information theory. Confirmed the wave nature of electrons. Pioneered cell-based (cellular) communications. Invented the solar cell. And the laser. Created the first trans-Atlantic communication cable. The first communication satellite. The C programming language.