Mail access protocols

• SMTP: delivery/storage to receiver’s server

• Mail access protocol: retrieval from server

  • POP: Post Office Protocol [RFC 1939]
    • authorization (agent <-->server) and download
  • IMAP: Internet Mail Access Protocol [RFC 1730]
    • more features (more complex)
    • manipulation of stored msgs on server
  • HTTP: Hotmail , Yahoo! Mail, etc.

SMTP

POP3 or

IMAP

receiver’s mail

server

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