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Item 245 of 426 · Year 12: Programming for the Web, 11 of 59

IMAP, POP3 and SMTP

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Definition

IMAP Y12 Programming for the Web Term

Internet Message Access Protocol: lets you read and manage email on the server and keeps all your devices in sync. Port 143 (993 secure).

Example: IMAP keeps messages on the server.

Found in: syllabus, sample exam and familiarisation guidelines, school notes.

POP3 Y12 Programming for the Web Term

Post Office Protocol 3: downloads email from the server to one device, usually deleting it from the server. Port 110 (995 secure).

Example: POP3 downloads and removes.

Found in: school notes.

SMTP Y12 Programming for the Web Term

Simple Mail Transfer Protocol: sends email from a client to a server and between servers. Port 25 (587 or 465 secure).

Example: SMTP sends, POP3 and IMAP receive.

Found in: syllabus, sample exam and familiarisation guidelines, school notes.

Short version to memorise (key terms bank)

Email: sync on server (143) / download (110) / send (25).

Where you'll use it in the test

Syllabus area: Y12 Programming for the Web.

Question types it can appear in

  • Multiple choice: Pick the option that matches the definition or example.
  • Matching or table: IMAP: Match it to its description, example or category. SMTP: Match mail protocols (familiarisation Q3)
  • Fill in the blanks: Choose this term to complete a statement or table.

Where it has appeared in the paper

Programming for the Web (Part C). Part letters follow each paper’s own layout.

Related past questions

How to use it

A model sentence

General advice, built from the definition and example above

“Internet Message Access Protocol: lets you read and manage email on the server and keeps all your devices in sync.” Then apply it: IMAP keeps messages on the server.

In a short answer, give the definition in your own words first, then tie it to the situation in the question. Do not copy the example above unless it fits the scenario.

Go deeper

Check yourself

Explain “IMAP, POP3 and SMTP” in one sentence, give an example, and name a question type that could test it.

Reveal the answer

IMAP: Internet Message Access Protocol: lets you read and manage email on the server and keeps all your devices in sync. Port 143 (993 secure).

Example: IMAP keeps messages on the server.

POP3: Post Office Protocol 3: downloads email from the server to one device, usually deleting it from the server. Port 110 (995 secure).

Example: POP3 downloads and removes.

SMTP: Simple Mail Transfer Protocol: sends email from a client to a server and between servers. Port 25 (587 or 465 secure).

Example: SMTP sends, POP3 and IMAP receive.

Could be tested as: Multiple choice, Matching or table, Fill in the blanks.

Quick multiple choice

How do IMAP and POP3 differ?

  1. IMAP is for file transfer; POP3 is for web pages
  2. POP3 sends email; IMAP only receives it
  3. IMAP keeps messages on the server and synchronises across devices; POP3 typically downloads them to one device
  4. They are identical except for the port
Show the answer

C

IMAP = mailbox stays on the server (multi-device). POP3 = download, often removing from the server.

Source: original (written for this study pack; not a NESA question). Open it in the multiple-choice bank.