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Email and its Protocols

Email and its Protocols. Hina Patel TCM-471 04-20-03. Email and its Protocols. Introduction of E-mail History of E-mail E-mail protocols (SMTP, POP3, IMAP) Comparison of IMAP and POP3 Advantages and Disadvantages Conclusion. Introduction of E-mail.

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Email and its Protocols

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  1. Email and its Protocols Hina Patel TCM-471 04-20-03

  2. Email and its Protocols • Introduction of E-mail • History of E-mail • E-mail protocols (SMTP, POP3, IMAP) • Comparison of IMAP and POP3 • Advantages and Disadvantages • Conclusion

  3. Introduction of E-mail • Most popular application/feature of Internet • King of Internet • Dating to business,even to war

  4. Introduction (continue) • % of North American use following modes of communication and the average amount of use per day. - Land-line phone 92% 45 minutes • Email 53% 29 minutes • Mobile phone 43% 16 minutes • IM 17% 16 minutes • Online Chat 9% 24 minutes - Mobile messaging 4% 14 minutes

  5. E-mail History • 1968 Bolt Beranek firm hire by United states Defense Department • ARPANET • 1971 Ray Tomlinson assigned for SNDMSG • @

  6. E-mail's Protocols • SMTP ( Mail posting) Simple Mail Transfer Protocol • POP3 (Mail reading) • Post Office Protocol • IMAP ( Mail reading/managing) Internet Message Access Protocol

  7. SMTP • Based on TCP port 25 ( run by mail server) • Mailing • Sending • Sender SMTP • Receiver SMTP

  8. POP3 • Standard client/server protocol • Delivering message • TCP port 110

  9. POP3 (Continue) • Authentication • Updates • Transaction

  10. IMAP • Originally from Stanford University 1968 • Manipulate from desktop, home computer, office workstation, notebook computer. • Provide support for “online,offline, and disconnected.”

  11. IMAP access from any computer/any where. Store mail on server Folder can be server and clients. Send message back and forth POP3 Used by one client/computer Store mail on client computer organizing mail into client-side folder. Send messages one way . IMAP Vs. POP3

  12. Advantages no password Disadvantages - None. SMTP (advantages and disadvantages)

  13. Advantages simple protocol Easier to implement Copies all messages when connection is made. When not connected, still access and read downloaded mail. Disadvantages if mail in different format, hassle to transfer mail. - synchronize their local inbox/server. POP3 (Advantages and Disadvantages)

  14. Advantages can store message Can access/manage multiple mail boxes. New/old mail can be accessed from any pc. Client independent. (switch mail to client PC without affecting user mail Disadvantages fewer client than POP3 slower than POP3 less IMAP Software than POP3 require more effect IMAP (Advantages and Disadvantages)

  15. Conclusion POP3- one client/computer client side SMTP- one server to another can be retrieved with POP3 and IMAP IMAP- any computer client/server side more complex

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