A computer is a machine that can be stupid for you. A computer can be stupid much faster than a human can be stupid. If a human is smart enough, they may even trick the computer into being stupid in a helpful way.
A side effect of their speed is an ability to speed communication. Unfortunately , that requires dealing with a computer to communicate, which can render the process no longer worthwhile, and you may find it more adventageous to meet face-to-face, or write a letter.