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Knowledge organisers / Wired and wireless networks, protocols and layers

Common protocols: SMTP (Simple Mail Transfer Protocol)

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Knowledge organiser

Wired and wireless networks, protocols and layers

1.3.2e.vii

What you need to know

SMTP (Simple Mail Transfer Protocol) is used for sending emails. It handles the delivery of outgoing emails from your email client to the recipient's email server.

Key points

  • Definition:SMTP (Simple Mail Transfer Protocol): the protocol used for SENDING emails from one email server to another across the Internet.
  • SMTP handles OUTGOING email only. POP and IMAP handle INCOMING email.
  • SMTP delivers emails from your email client to the recipient's email server.
  • Exam Tip:SMTP = SENDING. POP/IMAP = RECEIVING. A common exam question is to identify which protocol is used in each direction.