Ppt On Indian Media

PRESENTATION ON ELECTRONIC MAIL

1) The system of communicating messages in electronic form is called electronic mail or e-mail in short. 2) The electronic mail system required a communication network, besides Equipment for sending & receiving mails.

It is believed that the first e-mail was sent by Ray Tomlinson, an engineer, in 1971.

WHAT IS ELECTRONIC MAIL?

Messages communicated through telex, fax, and computer called Electronic mails. • The concept of paperless office was evolved in the year1960s. • Sending and receiving mails through computer systems aim to make this concept a reality, besides providing an easy and economical Means of communication. •

ADVANTAGES OF E-MAILS

1) Messages through e-mail can be in different forms such as text, image, sound, database, spreadsheet or an application. 2) This is very fast and it reaches its destination within a seconds, unlike conventional postal system. 3) Online availability of the recipient is not required when sending e-mails. 4) If message cannot be delivered within a reasonable time limit, they will return back to their sender indicating the reason for non-delivery. Mails that are returned are called bounced mails.

The e-mail is passed by the router to the server connected to the recipient's computer.

The server reads the address and passes the e-mail to the correct computer. The e-mail is sent to a router by the server. The router sends the messages to another router.

The message has an address that it can be sent directly to the right computer An e-mail message is typed by the s ender on his computer.

Router

Server

The message is sent to a server which is connected to the internet.

Routers are connected to each other by telephone lines and cables.

MAIL TRANSFER PROTOCOLS

1) Transmission of message through different computer networks is standardized through special protocols called Simple Mail Transfer Protocols or SMTP in short. This protocol is used for transferring mails. Actual process of transmitting messages is done by computer programs called Transport Agents.. Incoming mails is manages by POP Post Office Protocol.

To Address Carbon copy