| 9788 | Header Protection for Cryptographically Protected EmailD. K. Gillmor, B. Hoeneisen, A. Melnikov | Proposed Standard | August 2025 |
| 9477 | Complaint Feedback Loop Address HeaderJ. Benecke | Experimental | September 2023 |
| 9228 | Delivered-To Email Header FieldD. Crocker, Ed. | Experimental | April 2022 |
| 9110 | HTTP SemanticsR. Fielding, Ed., M. Nottingham, Ed., J. Reschke, Ed. | Internet Standard | June 2022 |
| 9057 | Email Author Header FieldD. Crocker | Experimental | June 2021 |
| 8942 | HTTP Client HintsI. Grigorik, Y. Weiss | Experimental | February 2021 |
| 8607 | Calendaring Extensions to WebDAV (CalDAV): Managed AttachmentsC. Daboo, A. Quillaud, K. Murchison, Ed. | Informational | June 2019 |
| 8601 | Message Header Field for Indicating Message Authentication StatusM. Kucherawy | Proposed Standard | May 2019 |
| 8594 | The Sunset HTTP Header FieldE. Wilde | Informational | May 2019 |
| 8565 | Hypertext Jeopardy Protocol (HTJP/1.0)E. Fokschaner | Informational | 1 April 2019 |
| 8473 | Token Binding over HTTPA. Popov, M. Nystroem, D. Balfanz, Ed., N. Harper, J. Hodges | Proposed Standard | October 2018 |
| 8460 | SMTP TLS ReportingD. Margolis, A. Brotman, B. Ramakrishnan, J. Jones, M. Risher | Proposed Standard | September 2018 |
| 8315 | Cancel-Locks in Netnews ArticlesM. Baeuerle | Proposed Standard | February 2018 |
| 8288 | Web LinkingM. Nottingham | Proposed Standard | October 2017 |
| 8126 | Guidelines for Writing an IANA Considerations Section in RFCsM. Cotton, B. Leiba, T. Narten | Best Current Practice | June 2017 |
| 8030 | Generic Event Delivery Using HTTP PushM. Thomson, E. Damaggio, B. Raymor, Ed. | Proposed Standard | December 2016 |
| 7912 | Message Authorizing Email Header Field and Its Use for the Draft and Release ProcedureA. Melnikov | Informational | June 2016 |
| 7838 | HTTP Alternative ServicesM. Nottingham, P. McManus, J. Reschke | Proposed Standard | April 2016 |
| 7809 | Calendaring Extensions to WebDAV (CalDAV): Time Zones by ReferenceC. Daboo | Proposed Standard | March 2016 |
| 7694 | Hypertext Transfer Protocol (HTTP) Client-Initiated Content-EncodingJ. Reschke · obsoleted by RFC 9110 | Proposed Standard | November 2015 |
| 7681 | Email Exchange of Secondary School TranscriptsJ. Davin | Informational | October 2015 |
| 7639 | The ALPN HTTP Header FieldA. Hutton, J. Uberti, M. Thomson | Proposed Standard | August 2015 |
| 7615 | HTTP Authentication-Info and Proxy-Authentication-Info Response Header FieldsJ. Reschke · obsoleted by RFC 9110 | Proposed Standard | September 2015 |
| 7601 | Message Header Field for Indicating Message Authentication StatusM. Kucherawy · obsoleted by RFC 8601 | Proposed Standard | August 2015 |
| 7595 | Guidelines and Registration Procedures for URI SchemesD. Thaler, Ed., T. Hansen, T. Hardie | Best Current Practice | June 2015 |
| 7540 | Hypertext Transfer Protocol Version 2 (HTTP/2)M. Belshe, R. Peon, M. Thomson, Ed. · obsoleted by RFC 9113 | Proposed Standard | May 2015 |
| 7444 | Security Labels in Internet EmailK. Zeilenga, A. Melnikov | Informational | February 2015 |
| 7293 | The Require-Recipient-Valid-Since Header Field and SMTP Service ExtensionW. Mills, M. Kucherawy | Proposed Standard | July 2014 |
| 7240 | Prefer Header for HTTPJ. Snell | Proposed Standard | June 2014 |
| 7239 | Forwarded HTTP ExtensionA. Petersson, M. Nilsson | Proposed Standard | June 2014 |
| 7235 | Hypertext Transfer Protocol (HTTP/1.1): AuthenticationR. Fielding, Ed., J. Reschke, Ed. · obsoleted by RFC 9110 | Proposed Standard | June 2014 |
| 7234 | Hypertext Transfer Protocol (HTTP/1.1): CachingR. Fielding, Ed., M. Nottingham, Ed., J. Reschke, Ed. · obsoleted by RFC 9111 | Proposed Standard | June 2014 |
| 7233 | Hypertext Transfer Protocol (HTTP/1.1): Range RequestsR. Fielding, Ed., Y. Lafon, Ed., J. Reschke, Ed. · obsoleted by RFC 9110 | Proposed Standard | June 2014 |
| 7232 | Hypertext Transfer Protocol (HTTP/1.1): Conditional RequestsR. Fielding, Ed., J. Reschke, Ed. · obsoleted by RFC 9110 | Proposed Standard | June 2014 |
| 7231 | Hypertext Transfer Protocol (HTTP/1.1): Semantics and ContentR. Fielding, Ed., J. Reschke, Ed. · obsoleted by RFC 9110 | Proposed Standard | June 2014 |
| 7230 | Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and RoutingR. Fielding, Ed., J. Reschke, Ed. · obsoleted by RFC 9110, RFC 9112 | Proposed Standard | June 2014 |
| 7208 | Sender Policy Framework (SPF) for Authorizing Use of Domains in Email, Version 1S. Kitterman | Proposed Standard | April 2014 |
| 7034 | HTTP Header Field X-Frame-OptionsD. Ross, T. Gondrom | Informational | October 2013 |
| 7001 | Message Header Field for Indicating Message Authentication StatusM. Kucherawy · obsoleted by RFC 7601 | Proposed Standard | September 2013 |
| 6857 | Post-Delivery Message Downgrading for Internationalized Email MessagesK. Fujiwara | Proposed Standard | March 2013 |
| 6797 | HTTP Strict Transport Security (HSTS)J. Hodges, C. Jackson, A. Barth | Proposed Standard | November 2012 |
| 6648 | Deprecating the "X-" Prefix and Similar Constructs in Application ProtocolsP. Saint-Andre, D. Crocker, M. Nottingham | Best Current Practice | June 2012 |
| 6638 | Scheduling Extensions to CalDAVC. Daboo, B. Desruisseaux | Proposed Standard | June 2012 |
| 6477 | Registration of Military Message Handling System (MMHS) Header Fields for Use in Internet MailA. Melnikov, G. Lunt | Informational | January 2012 |
| 6455 | The WebSocket ProtocolI. Fette, A. Melnikov | Proposed Standard | December 2011 |
| 6454 | The Web Origin ConceptA. Barth | Proposed Standard | December 2011 |
| 6376 | DomainKeys Identified Mail (DKIM) SignaturesD. Crocker, Ed., T. Hansen, Ed., M. Kucherawy, Ed. | Internet Standard | September 2011 |
| 6266 | Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)J. Reschke | Proposed Standard | June 2011 |
| 6265 | HTTP State Management MechanismA. Barth | Proposed Standard | April 2011 |
| 6109 | La Posta Elettronica Certificata - Italian Certified Electronic MailC. Petrucci, F. Gennai, A. Shahin, A. Vinciarelli | Informational | April 2011 |
| 6068 | The 'mailto' URI SchemeM. Duerst, L. Masinter, J. Zawinski | Proposed Standard | October 2010 |
| 5988 | Web LinkingM. Nottingham · obsoleted by RFC 8288 | Proposed Standard | October 2010 |
| 5789 | PATCH Method for HTTPL. Dusseault, J. Snell | Proposed Standard | March 2010 |
| 5598 | Internet Mail ArchitectureD. Crocker | Informational | July 2009 |
| 5536 | Netnews Article FormatK. Murchison, Ed., C. Lindsey, D. Kohn | Proposed Standard | November 2009 |
| 5518 | Vouch By ReferenceP. Hoffman, J. Levine, A. Hathcock | Proposed Standard | April 2009 |
| 5504 | Downgrading Mechanism for Email Address InternationalizationK. Fujiwara, Ed., Y. Yoneya, Ed. · obsoleted by RFC 6530 | Experimental | March 2009 |
| 5451 | Message Header Field for Indicating Message Authentication StatusM. Kucherawy · obsoleted by RFC 7001 | Proposed Standard | April 2009 |
| 5323 | Web Distributed Authoring and Versioning (WebDAV) SEARCHJ. Reschke, Ed., S. Reddy, J. Davis, A. Babich | Proposed Standard | November 2008 |
| 5322 | Internet Message FormatP. Resnick, Ed. | Draft Standard | October 2008 |
| 5321 | Simple Mail Transfer ProtocolJ. Klensin | Draft Standard | October 2008 |
| 5064 | The Archived-At Message Header FieldM. Duerst | Proposed Standard | December 2007 |
| 5023 | The Atom Publishing ProtocolJ. Gregorio, Ed., B. de hOra, Ed. | Proposed Standard | October 2007 |
| 4918 | HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV)L. Dusseault, Ed. | Proposed Standard | June 2007 |
| 4871 | DomainKeys Identified Mail (DKIM) SignaturesE. Allman, J. Callas, M. Delany, M. Libbey, J. Fenton, M. Thomas · obsoleted by RFC 6376 | Proposed Standard | May 2007 |
| 4408 | Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail, Version 1M. Wong, W. Schlitt · obsoleted by RFC 7208 | Experimental | April 2006 |
| 4395 | Guidelines and Registration Procedures for New URI SchemesT. Hansen, T. Hardie, L. Masinter · obsoleted by RFC 7595 | Best Current Practice | February 2006 |
| 4229 | HTTP Header Field RegistrationsM. Nottingham, J. Mogul | Informational | December 2005 |
| 4021 | Registration of Mail and MIME Header FieldsG. Klyne, J. Palme | Proposed Standard | March 2005 |
| 3865 | A No Soliciting Simple Mail Transfer Protocol (SMTP) Service ExtensionC. Malamud | Proposed Standard | September 2004 |