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Essay on Disadvantages of using E-mail
Electronic mail, abbreviated e-mail or email, is a method of composing, sending, and receiving messages over electronic communication systems. Most e-mail systems today use the Internet.
Despite common belief, e-mail actually pre-dates the Internet; in fact, existing e-mail systems were a crucial tool in creating the Internet.
E-mail started in 1965 as a way for multiple users of a time-sharing mainframe computer to communicate. Although the exact history is murky, among the first systems to have such a facility were SDC's Q32 and MIT's CTSS.
E-mail was quickly extended to become network e-mail, allowing users to pass messages between different computers. The early history of network e-mail is also murky; the AUTODIN system may have been the first allowing electronic text messages to be transferred between users on different computers in 1966, but it is possible the SAGE system had something similar some time before.
The ARPANET computer network made a large contribution to the evolution of e-mail. There is one report which indicates experimental inter-system e-mail transfers on it shortly after its creation, in 1969. Ray Tomlinson initiated the use of the @ sign to separate the names of the user and their machine in 1971. The common report that he "invented" e-mail is an exaggeration, although his early e-mail programs SNDMSG and READMAIL were very important. The ARPANET significantly increased the popularity of e-mail, and it became the killer app of the ARPANET.
DISADVANTAGES
POP3 or the Post Office Protocol is the oldest and best known of the two Internet message access protocols. It was designed to support "offline"/local email processing. Email is delivered to an email server and a remote email client periodically downloads messages from this server to the user's PC. Once the messages are delivered to the client they are permanently deleted from the email server....
