Introduction of E-Mail E-Mail is also known as electronic mail . It is equivalent of sending a letter though the mail.Primary component of the Electronic Mail system is a post office , it is an area on the shared hard disk that is reserved for mail. This post office serves as the central message holder and has both "in" and "out" baskets for each user . To send a message a link is established between the sender's "out "basket and the addressee's "in" basket. The method for receiving mail depends on the sophistication of the system. When multitasking personal computers and workstation are used, mail can be delivered to users while they are working on something else .Otherwise users have to interrogate their mailboxes (diskspace) in a central system or file server. 👉 Communication network is the backbone of electronic mail that connect remote terminals to a central system or a local area network that interconnec...