| 9057 | Email Author Header FieldD. Crocker | Experimental | June 2021 |
| 7103 | Advice for Safe Handling of Malformed MessagesM. Kucherawy, G. Shapiro, N. Freed | Informational | January 2014 |
| 5598 | Internet Mail ArchitectureD. Crocker | Informational | July 2009 |
| 5234 | Augmented BNF for Syntax Specifications: ABNFD. Crocker, Ed., P. Overell | Internet Standard | January 2008 |
| 4234 | Augmented BNF for Syntax Specifications: ABNFD. Crocker, Ed., P. Overell · obsoleted by RFC 5234 | Draft Standard | October 2005 |
| 2299 | Request for Comments SummaryA. Ramos | Informational | January 1999 |
| 2235 | Hobbes' Internet TimelineR. Zakon | Informational | November 1997 |
| 2234 | Augmented BNF for Syntax Specifications: ABNFD. Crocker, Ed., P. Overell · obsoleted by RFC 4234 | Proposed Standard | November 1997 |
| 1123 | Requirements for Internet Hosts - Application and SupportR. Braden, Ed. | Internet Standard | October 1989 |
| 1012 | Bibliography of Request For Comments 1 through 999J.K. Reynolds, J. Postel | Informational | June 1987 |
| 1011 | Official Internet protocolsJ.K. Reynolds, J. Postel | Unknown | May 1987 |
| 1000 | Request For Comments reference guideJ.K. Reynolds, J. Postel | Unknown | August 1987 |
| 991 | Official ARPA-Internet protocolsJ.K. Reynolds, J. Postel · obsoleted by RFC 1011 | Unknown | November 1986 |
| 961 | Official ARPA-Internet protocolsJ.K. Reynolds, J. Postel · obsoleted by RFC 991 | Unknown | December 1985 |
| 944 | Official ARPA-Internet protocolsJ.K. Reynolds, J. Postel · obsoleted by RFC 961 | Unknown | April 1985 |
| 924 | Official ARPA-Internet protocols for connecting personal computers to the InternetJ.K. Reynolds, J. Postel · obsoleted by RFC 944 | Unknown | October 1984 |
| 901 | Official ARPA-Internet protocolsJ.K. Reynolds, J. Postel · obsoleted by RFC 924 | Unknown | June 1984 |
| 899 | Request For Comments summary notes: 800-899J. Postel, A. Westine | Informational | May 1984 |
| 880 | Official protocolsJ.K. Reynolds, J. Postel · obsoleted by RFC 901 | Historic | October 1983 |
| 841 | Specification for message format for Computer Based Message SystemsNational Bureau of Standards | Unknown | January 1983 |
| 840 | Official protocolsJ. Postel · obsoleted by RFC 880 | Historic | April 1983 |
| 808 | Summary of computer mail services meeting held at BBN on 10 January 1979J. Postel | Unknown | March 1982 |
| 806 | Proposed Federal Information Processing Standard: Specification for message format for computer based message systemsNational Bureau of Standards · obsoleted by RFC 841 | Unknown | September 1981 |
| 805 | Computer mail meeting notesJ. Postel | Unknown | February 1982 |
| 799 | Internet name domainsD.L. Mills | Unknown | September 1981 |
| 788 | Simple Mail Transfer ProtocolJ. Postel · obsoleted by RFC 821 | Unknown | November 1981 |
| 785 | Mail Transfer Protocol: ISI TOPS20 file definitionsS. Sluizer, J. Postel | Unknown | July 1981 |
| 784 | Mail Transfer Protocol: ISI TOPS20 implementationS. Sluizer, J. Postel | Unknown | July 1981 |
| 780 | Mail Transfer ProtocolS. Sluizer, J. Postel · obsoleted by RFC 788 | Unknown | May 1981 |
| 774 | Internet Protocol Handbook: Table of contentsJ. Postel | Unknown | October 1980 |
| 773 | Comments on NCP/TCP mail service transition strategyV.G. Cerf | Unknown | October 1980 |
| 772 | Mail Transfer ProtocolS. Sluizer, J. Postel · obsoleted by RFC 780 | Unknown | September 1980 |
| 771 | Mail transition planV.G. Cerf, J. Postel | Unknown | September 1980 |
| 767 | Structured format for transmission of multi-media documentsJ. Postel | Unknown | August 1980 |
| 766 | Internet Protocol Handbook: Table of contentsJ. Postel · obsoleted by RFC 774 | Unknown | July 1980 |
| 759 | Internet Message ProtocolJ. Postel | Historic | August 1980 |
| 757 | Suggested solution to the naming, addressing, and delivery problem for ARPANET message systemsD.P. Deutsch | Unknown | September 1979 |
| 753 | Internet Message ProtocolJ. Postel | Unknown | March 1979 |
| 744 | MARS - a Message Archiving and Retrieval ServiceJ. Sattley | Unknown | January 1978 |