I. It is the quickest means of transmitting messages.
II. E-mail does not thrust itself upon the receiver. You can check your mailbox and receive your messages at your leisure.
III. E-mail saves you from telephone tags.
IV. E-mail messages can be sent to a large number of people simultaneously or to only a selected few, depending upon the requirement.
V. E-mail messages are supposed to be highly confidential and secure. The use of codes can make a message so secure that nobody except the person concerned can decipher it.
VI. E-mail message can be easily stored for future reference.
VII. Convenient for people in areas with wide zone differences.