Electronic mail abbreviated as email, is the transmission of messages over the communication networks. Here no need of a hard copy of the message or writing a letter or printing a letter. We don't have to follow any basic rules in sending a message. The best thing is that time consumption in waiting for the reply can be reduced to greater extends. Actually email is the message that is typed into the message window of the computer screen. The message will contain an address of the sender and also the recipient.