Unlike manual mail delivary system the electronic mail delivary system is very fast and efficient. The postal delivary in this system may neither be stopped by snow nor by rain, heat, night wind etc.
The attraction of e-mail is, no doubt its speed. It has a speed of the telephone without a requirement of both parties be available at the same instant. It also leaves a written copy of delivered message with the sender. It also provides a way of sending same message to multidestinations at the same instant.