RFC 1939: Post Office Protocol - Version 3

The Post Office Protocol - Version 3 (POP3) is intended to permit a workstation to dynamically access a maildrop on a server host in a useful fashion.…

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Outgoing relationships (7 related RFCs)

Obsoletes, Informative reference — RFC 1725: Post Office Protocol - Version 3
Informative reference — RFC 822: STANDARD FOR THE FORMAT OF ARPA INTERNET TEXT MESSAGES
Informative reference — RFC 1321: The MD5 Message-Digest Algorithm
Informative reference — RFC 821: Simple Mail Transfer Protocol
Informative reference — RFC 1734: POP3 AUTHentication command
Informative reference — RFC 1730: Internet Message Access Protocol - Version 4
Informative reference — RFC 1460: Post Office Protocol - Version 3

Incoming relationships (30 related RFCs)

Updated by, Normatively referenced by — RFC 6186: Use of SRV Records for Locating Email Submission/Access Services
Updated by — RFC 2449: POP3 Extension Mechanism
Updated by, Normatively referenced by — RFC 8314: Cleartext Considered Obsolete: Use of Transport Layer Security (TLS) for Email Submission and Access
Updated by — RFC 1957: Some Observations on Implementations of the Post Office Protocol (POP3)
Normatively referenced by — RFC 5598: Internet Mail Architecture
Normatively referenced by — RFC 5034: The Post Office Protocol (POP3) Simple Authentication and Security Layer (SASL) Authentication Mechanism
Normatively referenced by — RFC 5721: POP3 Support for UTF-8
Normatively referenced by — RFC 6856: Post Office Protocol Version 3 (POP3) Support for UTF-8
Normatively referenced by — RFC 4161: Guidelines for Optional Services for Internet Fax Gateways
Normatively referenced by — RFC 6858: Simplified POP and IMAP Downgrading for Internationalized Email
Normatively referenced by — RFC 7817: Updated Transport Layer Security (TLS) Server Identity Check Procedure for Email-Related Protocols
Informatively referenced by — RFC 4949: Internet Security Glossary, Version 2
Informatively referenced by — RFC 2821: Simple Mail Transfer Protocol
Informatively referenced by — RFC 3461: Simple Mail Transfer Protocol (SMTP) Service Extension for Delivery Status Notifications (DSNs)
Informatively referenced by — RFC 3819: Advice for Internet Subnetwork Designers
Informatively referenced by — RFC 6530: Overview and Framework for Internationalized Email
Informatively referenced by — RFC 7624: Confidentiality in the Face of Pervasive Surveillance: A Threat Model and Problem Statement
Informatively referenced by — RFC 2532: Extended Facsimile Using Internet Mail
Informatively referenced by — RFC 4686: Analysis of Threats Motivating DomainKeys Identified Mail (DKIM)
Informatively referenced by — RFC 6650: Creation and Use of Email Feedback Reports: An Applicability Statement for the Abuse Reporting Format (ARF)
Informatively referenced by — RFC 8689: SMTP Require TLS Option
Informatively referenced by — RFC 3395: Remote Network Monitoring MIB Protocol Identifier Reference Extensions
Informatively referenced by — RFC 7601: Message Header Field for Indicating Message Authentication Status
Informatively referenced by — RFC 9787: Guidance on End-to-End Email Security
Informatively referenced by — RFC 3117: On the Design of Application Protocols
Informatively referenced by — RFC 4416: Goals for Internet Messaging to Support Diverse Service Environments
Informatively referenced by — RFC 6196: Moving mailserver: URI Scheme to Historic
Informatively referenced by — RFC 6595: A Simple Authentication and Security Layer (SASL) and GSS-API Mechanism for the Security Assertion Markup Language (SAML)
Informatively referenced by — RFC 6616: A Simple Authentication and Security Layer (SASL) and Generic Security Service Application Program Interface (GSS-API) Mechanism for OpenID
Informatively referenced by — RFC 7832: Application Bridging for Federated Access Beyond Web (ABFAB) Use Cases