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Post Office Protocol

In computing, the Post Office Protocol (POP) is an application-layer Internet standard protocol used by e-mail clients to retrieve e-mail from a mail server. Today, POP version 3 (POP3) is the most commonly used version. Together with IMAP, it is one of the most common protocols for email retrieval.

History & Standards

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Topic orientation

Post Office Protocol at a glance

The strongest research directions include History and Purpose. Use the connected concepts below as starting points, not as a keyword checklist.

Joyce K. ReynoldsRFCPOPmailPASSLoginInternet ProtocolDial-up accessEncrypted communication

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Explore the main themes, entities and connections around Post Office Protocol. Start with the topic map, then use the sections below for research and deeper semantic analysis.

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History

Joyce K. ReynoldsRFCPOPmailPASSLogin
24 related topics

Purpose

Internet ProtocolDial-up accessEncrypted communicationSTLSTransport Layer Security
9 related topics

Extensions and specifications

Demon InternetComputingServerTCP/IPKerberos
6 related topics

Comparison with IMAP

MIME
1 related topic

Topics to explore

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Overview

Purpose

History

Extensions and specifications

Comparison with IMAP

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How this topic connects Entity context

Quick relationship hints grouped by predicate. Useful for spotting recurring semantic connections around the current entity.

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Post Office Protocol

Top relations

related to Related requests for comments (RFCs) · 31
Post Office Protocol → ACAPRFC, Access, AUTH POP Response CodesRFC, Authentication MechanismRFC, Cleartext Considered Obsolete, Email Submission, IMAP, IMAP/POP AUTHorize Extension, Implementations, Lock-gray-alt-2, Lock-green, Lock-red-alt-2, POP URL SchemeRFC, POP3, POP3 Extension MechanismRFC, POST OFFICE PROTOCOLRFC, RFC, SASL, Security Layer, Simple Authentication
related to history · 12
Post Office Protocol → It, Joyce, Pine, POP, POP1, POP2, POP3, POPmail, Reynolds, RFC, The, This
related to Purpose · 12
Post Office Protocol → By, IMAP, Internet, Internet Message Access Protocol, Internet Protocol, IP, POP, POP3, The, The Post Office Protocol, This, UIDL
related to Kerberized Post Office Protocol · 11
Post Office Protocol → Cyrus IMAP, In, Internet, Kerberized Post Office Protocol, Kerberos, KPOP, One, POP3, TCP, TCP/IP, The KPOP

Important terminology Word statistics

Frequent words and multi-word phrases across the lead, headings, infobox and body. Useful for terminology coverage.

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Important terminology

server protocol pop3 imap pop message clients rfc mail messages client internet session access retrieve port post office command support

Entity relationships Subject–Predicate–Object triples

Extracted RDF-like relationships with confidence and source. The table includes structured facts and lower-confidence contextual relations.
SubjectPredicateObjectConfidenceSrc
Pineinstance ofThis led to a number of POP implementations0.80text
POPmailinstance ofThis led to a number of POP implementations0.80text
and other early mail clients.While the original POP3 specification supported only an unencrypted USER/PASS login mechanism or Berkeley .rhosts access controlinstance ofThis led to a number of POP implementations0.80text
today POP3 supports several authentication methods to provide varying levels of protection against illegitimate access to a user's e-mailinstance ofThis led to a number of POP implementations0.80text
Post Office Protocolrelated to historyThe0.60section
Post Office Protocolrelated to historyPOP10.60section
Post Office Protocolrelated to historyRFC0.60section
Post Office Protocolrelated to historyJoyce0.60section
Post Office Protocolrelated to historyReynolds0.60section
Post Office Protocolrelated to historyPOP20.60section
Post Office Protocolrelated to historyPOP30.60section
Post Office Protocolrelated to historyIt0.60section

Related concept clusters Concept neighborhoods

Clusters of nearby vocabulary surrounding the topic. Scan them for adjacent concepts and language you may have missed.

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

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    Map overview Semantic statistics

    Number of nodes, edges, triples, density and central hubs. Use it to gauge the size and connectivity of the map.

    Post Office Protocol

    Nodes52
    Edges51
    Triples70
    Avg. degree1.96
    Density0.038462
    Components1
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