1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 MAILMAIL RFCs RFCs RFC 989 / Historic RFC 1113 / Historic RFC 1421 / Historic RFC 171 RFC 264 RFC 354 RFC 542 RFC 765 Privacy enhancement for Privacy enhancement for Privacy Enhancement for The Data The Data File File RFC 751 RFC 959 / STD 9 File Transfer Internet electronic mail: Part I: Internet electronic mail: Part I - Internet Electronic Mail: Part Transfer Transfer Transfer Transfer Survey of FTP RFC 414 RFC 614 Protocol Message encipherment and message encipherment and I: Message Encryption and Protocol Protocol Protocol Protocol mail and MLFL RFC 172 RFC 265 File Transfer Response to RFC 607: FTPFTP mail mail authentication procedures authentication procedures Authentication Procedures The File The File Protocol (FTP) "Comments on the File RFC 1114 / Historic RFC 1422 / Historic RFC 524 Transfer Transfer status and further Transfer Protocol" RFC 1040 / Historic Privacy enhancement for Privacy Enhancement for Proposed Mail RFC 780 Protocol Protocol comments RFC 753 RFC 772 RFC 788 RFC 821 / STD 10 RFC 876 Privacy enhancement for Internet electronic mail: Part II Internet Electronic Mail: Part Protocol Mail RFC 640 RFC 706 Internet Message Mail Transfer Simple Mail Simple Mail Transfer Survey of SMTP MTP,MTP, SMTP SMTP Internet electronic mail: Part I: - certificate-based key II: Certificate-Based Key RFC 385 RFC 454 Revised FTP On the junk mail Transfer management Management RFC 114 Protocol Protocol Transfer Protocol Protocol implementations Message encipherment and Comments File Transfer ProtocolRFC 539 - reply codes problem Protocol RFC 1115 / Historic RFC 1423 / Historic File Transfer authentication procedures on the File meeting announcementThoughts on the mail Privacy enhancement for Privacy Enhancement for Protocol Transfer and a new proposedprotocol proposed in RFC 754 RFC 630 RFC 771 Internet electronic mail: Part III Internet Electronic Mail: Part Protocol document RFC 524 FTP error code Out-of-net host (c) 2014-2017 by Takashi Takizawa RFC 133 Mail transition RFC 993 RFC 1056 / Informational - algorithms, modes, and III: Algorithms, Modes, and RFC 555 usage for more addresses for File Transfer and RFC 458 plan RFC 918 PCMAIL: A Distributed PCMAIL: A Distributed identifiers Identifiers This diagram is licensed under the Creative Commons Responses to critiquesreliable mail service mail PCMAIL Error Recovery Mail retrieval PCMAIL Mail System for Personal Mail System for Personal RFC 1424 / Historic Attribution 4.0 International License. To view a copy of this of the proposed mail RFC 773 via FTP Computers Computers RFC 1176 / Experimental Privacy Enhancement for protocol Comments on license, visit http://creativecommons.org/licenses/by/4.0/. RFC 141 IMAP Interactive Mail Access Internet Electronic Mail: Part RFC 724 NCP/TCP mail service IMAP PEM Comments on RFC 114: RFC 475 Protocol: Version 2 PEM IV: Key Certification and A File Transfer Protocol FTP and RFC 644 Proposed official transition strategy Related Services RFC 984 Edition: 2017-07-02 Network Mail RFC 577 On the problem of standard for the format RFC 767 RFC 937 / Historic Message Format PCMAIL: A Distributed To view the latest edition, visit http://emaillab.jp/mail/mail-rfc/. RFC 196 RFC 278 System Mail priority signature authentication Message Format of ARPA Network Structured format for Post Office Protocol: RFC 1064 RFC 1203 / Historic POP Mail System for Personal for network mail messages transmission of multi- POP Version 2 Interactive Mail Access Interactive Mail Access Mail Box Revision of the Computers Protocol Mail Box Protocol media documents Protocol: Version 2 Protocol: Version 3 RFC 469 RFC 720 RFC 822 / STD 11 RFC 886 RFC 561 RFC 680 RFC 733 Network Address STANDARD FOR THE Proposed RFC 1137 / Historic RFC 221 Standardizing Message Standard for the format RFC 915 RFC 976 RFC 1204 / Experimental RFC 1339 / Experimental mail Specification FORMAT OF ARPA standard for Mapping between full HISTORIC Mail Box Protocol: Network Mail Transmission of ARPA network text Network mail path UUCP mail interchange Message Posting Remote Mail Checking meeting Syntax for INTERNET TEXT message header RFC 822 and RFC 822 HISTORIC Version 2 Headers Protocol messages service format standard Protocol (MPP) Protocol summary Network Mail MESSAGES munging with restricted encoding.

82 84 86 88 90 91 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017

RFC 2142 / PS RFC 1168 / Informational RFC 7103 / Informational Mailbox Names for RFC 5598 / Informational Intermail and Commercial Advice for Safe Handling of Misc. Common Services, Roles Internet Mail Architecture Mail Relay services Malformed Messages Misc. and Functions

RFC 821 / STD 10 RFC 2821 / PS RFC 5321 / DS Simple Mail Transfer Simple Mail Transfer Simple Mail Transfer Protocol Protocol Protocol

RFC 4405 / Experimental RFC 2505 / BCP 30 RFC 3865 / PS RFC 974 / STD 10, Historic SMTP Service Extension for RFC 1425 / PS RFC 1651 / DS RFC 1869 / STD 10 Anti-Spam A No Soliciting Simple Mail Mail routing and the domain Indicating the Responsible SMTP Service Extensions SMTP Service Extensions SMTP Service Extensions Recommendations for Transfer Protocol (SMTP) system Submitter of an E-Mail SMTP MTAs Service Extension Message

RFC 7293 / PS RFC 1047 RFC 1426 / PS RFC 1652 / DS RFC 6152 / STD 71 The Require-Recipient- Duplicate messages and SMTP Service Extension for SMTP Service Extension for SMTP Service Extension for Valid-Since Header Field SMTP 8bit-MIMEtransport 8bit-MIMEtransport 8-bit MIME Transport and SMTP Service Extension

RFC 3207 / PS RFC 3848 / DS RFC 4141 / PS RFC 1427 / PS RFC 1653 / DS RFC 1870 / STD 10 RFC 2487 / PS RFC 6729 / PS RFC 7504 / PS RFC 1090 SMTP Service Extension for ESMTP and LMTP SMTP and MIME SMTP Service Extension for SMTP Service Extension for SMTP Service Extension for SMTP Service Extension for Indicating Handling SMTP 521 and 556 Reply SMTP on X.25 Secure SMTP over Transmission Types Extensions for Content Message Size Declaration Message Size Declaration Message Size Declaration Secure SMTP over TLS States in Trace Fields Codes Security Registration Conversion

RFC 7505 / PS RFC 1123 / STD 3 RFC 1428 / Informational RFC 3974 / Informational RFC 6710 / PS RFC 1854 / PS RFC 2197 / DS RFC 2920 / STD 60 A "Null MX" No Service Requirements for Internet Transition of Internet Mail SMTP Operational Simple Mail Transfer SMTP Service Extension for SMTP Service Extension for SMTP Service Extension for Resource Record for Hosts -- Application and from Just-Send-8 to 8bit- Experience in Mixed IPv4/v6 Protocol Extension for Command Pipelining Command Pipelining Command Pipelining Domains That Accept No Support SMTP/MIME Environments Message Transfer Priorities Mail

RFC 7672 / PS RFC 1830 / Experimental RFC 3030 / PS RFC 5068 / BCP 134 SMTP Security via Opportunistic SMTP Service Extensions SMTP Service Extensions Email Submission DNS-Based Authentication of for Transmission of Large for Transmission of Large Operations: Access and Named Entities (DANE) Transport and Binary MIME Messages and Binary MIME Messages Accountability Requirements Layer Security (TLS)

RFC 7817 / PS RFC 1985 / PS RFC 4409 / DS RFC 6409 / STD 70 Updated Transport Layer SMTP Service Extension for RFC 2476 / PS Message Submission for Message Submission for Security (TLS) Remote Message Queue Message Submission Mail Mail Identity Check Procedure Starting for Email-Related Protocols

RFC 1845 / Experimental RFC 2554 / PS RFC 4954 / PS SMTP Service Extension for SMTP Service Extension for SMTP Service Extension for Checkpoint/Restart Authentication Authentication

RFC 2645 / PS RFC 4865 / PS RFC 4468 / PS RFC 1846 / Experimental ON-DEMAND MAIL RELAY SMTP Submission Service Message Submission SMTP 521 Reply Code (ODMR) SMTP with Extension for Future BURL Extension Message Submission, SMTP-AUTH Dynamic IP Addresses Message Release Message Submission, SMTP-AUTH

RFC 2034 / PS RFC 2298 / PS RFC 3798 / DS RFC 8098 / STD 85 SMTP Service Extension for An Extensible Message Message Disposition Message Disposition Returning Enhanced Error Format for Message Notification Notification Codes Disposition Notifications RFC 5248 / BCP 138 A Registry for SMTP RFC 3461 / DS Enhanced Mail System RFC 6522 / STD 73 RFC 1891 / PS Simple Mail Transfer RFC 3885 / PS Status Codes The Multipart/Report Media SMTP Service Extension for Protocol (SMTP) Service SMTP Service Extension for Type for the Reporting of Delivery Status Notifications Extension for Delivery Message Tracking Mail System Administrative Status Notifications (DSNs) Messages

RFC 1892 / PS RFC 3462 / DS RFC 5337 / Experimental RFC 6533 / PS The Multipart/Report The Multipart/Report Internationalized Delivery Internationalized Delivery DSN, MDN Content Type for the Content Type for the DSN, MDN Status and Disposition Status and Disposition Reporting of Mail System Reporting of Mail System Notifications Notifications Administrative Messages Administrative Messages

RFC 5336 / Experimental RFC 1893 / PS RFC 3463 / DS RFC 6531 / PS SMTP Extension for Enhanced Mail System Enhanced Mail System SMTP Extension for Internationalized Email Status Codes Status Codes RFC 5825 / Experimental Internationalized Email RFC 2852 / PS Addresses Displaying Downgraded Deliver By SMTP Service Messages for Email RFC 1894 / PS Extension RFC 3464 / DS RFC 3886 / PS RFC 4952 / Informational Address Internationalization RFC 6530 / PS An Extensible Message An Extensible Message An Extensible Message Overview and Framework Overview and Framework Format for Delivery Status Format for Delivery Status Format for Message for Internationalized Email for Internationalized Email Notifications Notifications Tracking Responses

RFC 5504 / Experimental RFC 5983 / Experimental RFC 1711 / Informational RFC 6783 / Informational RFC 2033 / Informational Downgrading Mechanism Mailing Lists and SMTP Classifications in E-mail Mailing Lists and Non-ASCII Local Mail Transfer Protocol for Email Address Internationalized Email SMTP Routing EAI Addresses EAI Internationalization Addresses

RFC 5034 / PS RFC 1081 RFC 1460 / DS RFC 1725 / STD 53 RFC 1939 / STD 53 RFC 2449 / PS The Post Office Protocol RFC 6856 / PS RFC 5721 / PS Post Office Protocol: Post Office Protocol - Post Office Protocol - Post Office Protocol - POP3 Extension (POP3) Simple Authentication Post Office Protocol Version POP3 Support for UTF-8 Version 3 Version 3 Version 3 Version 3 Mechanism and Security Layer (SASL) 3 (POP3) Support for UTF-8 Authentication Mechanism

RFC 1957 / Informational RFC 1225 / DS RFC 1734 / PS RFC 3206 / PS Some Observations on RFC 2384 / PS Post Office Protocol: POP3 AUTHentication The SYS and AUTH POP Implementations of the Post POP URL Scheme Version 3 command Response Codes Office Protocol (POP3)

RFC 6857 / PS RFC 1082 RFC 2095 / PS RFC 4616 / PS RFC 6186 / PS RFC 2595 / PS Post-Delivery Message Post Office Protocol: IMAP/POP AUTHorize The PLAIN Simple Use of SRV Records for Using TLS with IMAP, POP3 Downgrading for Version 3: Extended service IMAP/POP3 Extension for Simple Authentication and Security Locating Email IMAP/POP3 and ACAP Internationalized Email offerings Challenge/Response Layer (SASL) Mechanism Submission/Access Services Messages

RFC 2195 / PS RFC 3656 / Experimental RFC 6858 / PS POP3 IMAP/POP AUTHorize The Mailbox Update RFC 4146 / Informational Simplified POP and IMAP POP3 Extension for Simple (MUPDATE) Distributed Simple New Mail Notification Downgrading for Challenge/Response Mailbox Database Protocol Internationalized Email

RFC 1730 / PS RFC 2060 / PS RFC 3501 / PS RFC 5738 / Experimental RFC 6855 / PS Internet Message Access Internet Message Access Internet Message Access IMAP Support for UTF-8 IMAP Support for UTF-8 Protocol - Version 4 Protocol - Version 4rev1 Protocol - Version 4rev1 RFC 4959 / PS RFC 5530 / PS IMAP Extension for Simple IMAP Response RFC 1731 / PS RFC 3502 / PS Authentication and Security Layer RFC 2061 / Informational RFC 2683 / Informational Codes IMAP4 Authentication RFC 2342 / PS Internet Message Access (SASL) Initial Client Response IMAP4 Compatibility with IMAP4 Implementation RFC 5788 / PS Mechanisms IMAP4 Namespace Protocol (IMAP) - IMAP2bis Recommendations MULTIAPPEND Extension IMAP4 Keyword Registry RFC 5259 / PS RFC 4978 / PS RFC 1732 / Informational Internet Message Access The IMAP IMAP4 Compatibility with RFC 3503 / PS Protocol - CONVERT COMPRESS Extension IMAP2 and IMAP2bis RFC 2062 / Informational Message Disposition Extension Internet Message Access Notification (MDN) profile for RFC 5032 / PS Protocol - Obsolete Syntax Internet Message Access RFC 4314 / PS WITHIN Search RFC 5267 / PS Protocol (IMAP) IMAP4 Access Control List RFC 1733 / Informational Extension to the IMAP Contexts for IMAP4 (ACL) Extension Distributed Electronic Mail Protocol Models in IMAP4 RFC 2086 / PS RFC 2359 / PS RFC 2971 / PS RFC 3516 / PS RFC 4315 / PS RFC 5161 / PS RFC 5464 / PS IMAP4 ACL extension IMAP4 UIDPLUS extension IMAP4 ID extension IMAP4 Binary Content Internet Message Access The IMAP ENABLE The IMAP METADATA Extension Protocol (IMAP) - UIDPLUS Extension Extension RFC 3348 / Informational extension RFC 2087 / PS The Internet Message Action RFC 3691 / PS RFC 5162 / PS IMAP4 QUOTA extension RFC 4466 / PS RFC 5465 / PS Protocol (IMAP4) Child Internet Message Access IMAP4 Extensions for Collected Extensions to The IMAP NOTIFY Mailbox Extension Protocol (IMAP) UNSELECT Quick Mailbox RFC 7888 / PS IMAP4 ABNF Extension RFC 2088 / PS command Resynchronization MAP4 Non-synchronizing IMAP4 non-synchronizing RFC 4467 / PS RFC 5182 / PS Literals RFC 5466 / PS literals Internet Message Access IMAP Extension for IMAP4 Extension for Named Protocol (IMAP) - URLAUTH Referencing the Last Searches (Filters) RFC 7162 / PS RFC 2177 / PS Extension SEARCH Result RFC 6154 / PS RFC 6851 / PS IMAP4 IDLE command Internet Message Access IMAP Extensions: Quick Flag RFC 7889 / PS RFC 4469 / PS RFC 5255 / PS IMAP LIST Extension for Changes Resynchronization The IMAP APPENDLIMIT Special-Use Mailboxes Protocol (IMAP) - MOVE Internet Message Access Internet Message Access Extension (CONDSTORE) and Quick Mailbox Extension RFC 2180 / Informational Protocol (IMAP) CATENATE Protocol Resynchronization (QRESYNC) IMAP4 Multi-Accessed Extension Internationalization RFC 6203 / PS Mailbox Practice RFC 4551 / PS RFC 5256 / PS RFC 5593 / PS IMAP4 Extension for Fuzzy IMAP Extension for Conditional Internet Message Access Internet Message Access Search RFC 2192 / PS STORE Operation or Quick Flag Protocol - SORT and Protocol (IMAP) - URL IMAP URL Scheme Changes Resynchronization THREAD Extensions Access Identifier Extension RFC 6237 / PS RFC 7377 / PS RFC 4731 / PS RFC 5257 / Experimental RFC 5819 / PS IMAP4 Multimailbox IMAP4 Multimailbox IMAP4 Extension to SEARCH Internet Message Access IMAP4 Extension for Returning SEARCH Extension SEARCH Extension RFC 2193 / PS Command for Controlling What Protocol - ANNOTATE STATUS Information in IMAP4 Mailbox Referrals Kind of Information Is Returned Extension Extended LIST RFC 5258 / PS RFC 5957 / PS IMAP/POP3 RFC 4549 / Informational RFC 5092 / PS Internet Message Access Display-Based Address IMAP/POP3 RFC 2221 / PS Synchronization Operations IMAP URL Protocol version 4 - LIST Sorting for the IMAP4 SORT IMAP4 Login Referrals for Disconnected IMAP4 Scheme Clients Command Extensions Extension IMAPIMAP RFC 5442 / Informational LEMONADE Architecture - Supporting Open Mobile Alliance (OMA) Mobile Email (MEM) Using Internet Mail RFC 5383 / BCP 143 LemonadeLemonade Deployment RFC 5551 / Informational Considerations for Lemonade Notifications Lemonade-Compliant Architecture RFC 4550 / PS Mobile Email RFC 5550 / PS Internet Email to Support The Internet Email to Diverse Service Support Diverse Service Environments (Lemonade) Environments (Lemonade) Profile Profile

RFC 2156 / PS RFC 6785 / PS RFC 987 / Unknown MIXER (Mime Internet RFC 3028 / PS RFC 5228 / PS Support for Internet Mapping between X.400 Enhanced Relay): Sieve: A Mail Filtering Sieve: An Email Filtering Message Access Protocol X.400 and RFC 822 RFC 1327 / PS RFC 1495 / PS Mapping between X.400 Language Language RFC 5804 / PS (IMAP) Events in Sieve Mapping between Mapping between X.400 and RFC 822/MIMEs A Protocol for Remotely X.400(1988) / ISO 10021 and RFC-822 Message RFC 1026 / Unknown RFC 2157 / PS RFC 5429 / PS Managing Sieve Scripts and RFC 822 Bodies RFC 3834 / PS RFC 5173 / PS Addendum to RFC Mapping between X.400 Sieve Email Filtering: Reject and RFC-822/MIME Recommendations for Sieve Email Filtering: 987: (Mapping Body Extension and Extended Reject RFC 1496 / Historic Message Bodies Automatic Responses to between X.400 and Extensions RFC 5784 / PS RFC 1328 / Historic Rules for downgrading messages Electronic Mail RFC 5183 / PS RFC-822) Sieve Email Filtering: X.400 1988 to 1984 from X.400/88 to X.400/84 when RFC 2158 / PS Sieve Email Filtering: Sieves and Display RFC 1138 / downgrading MIME content-types are present X.400 Image Body Parts Environment Extension RFC 7352 / PS RFC 5435 / PS Directives in XML RFC 6131 / PS Experimental in the messages Sieve Email Filtering: Sieve Vacation Extension: Sieve Email Filtering: RFC 5229 / PS Mapping between RFC 2159 / PS Extension for Notifications "Seconds" Parameter Detecting Duplicate X.400(1988) / ISO Sieve Email Filtering: A MIME Body Part for FAX RFC 5436 / PS RFC 6132 / PS Deliveries 10021 and RFC 822 Variables Extension Sieve Notification Sieve Notification Using RFC 2160 / PS RFC 5230 / PS Mechanism: mailto Presence Information RFC 1148 / Carrying PostScript in X.400 Sieve Email Filtering: RFC 5437 / PS RFC 6133 / Informational Experimental RFC 1648 / Historic and MIME Vacation Extension Mapping between Postmaster Convention for Sieve Notification Sieve Email Filtering: Use of RFC 3431 / PS RFC 5231 / PS X.400(1988) / ISO X.400 Operations RFC 2161 / Experimental Mechanism: Extensible Presence Information with Sieve Extension: Relational Sieve Email Filtering: 10021 and RFC 822 A MIME Body Part for ODA Messaging and Presence Auto-Responder Tests Relational Extension Protocol (XMPP) Functionality RFC 1405 / Experimental RFC 2162 / Experimental RFC 3894 / PS RFC 5232 / PS RFC 5463 / PS RFC 6134 / PS Mapping between MaXIM-11 - Mapping Sieve Extension: Copying Sieve Email Filtering: Sieve Email Filtering: Ihave Sieve Extension: Externally X.400(1984/1988) and Mail- between X.400 / Internet Without Side Effects Imap4flags Extension Extension Stored Lists 11 (DECnet mail) mail and Mail-11 mail RFC 3598 / PS RFC 5233 / PS RFC 5490 / PS RFC 6468 / PS Sieve Email Filtering -- Sieve Email Filtering: The Sieve Mail-Filtering Sieve Notification Language -- Extensions for RFC 2163 / PS Subaddress Extension Subaddress Extension Mechanism: SIP MESSAGE RFC 1494 / Historic RFC 1664 / Experimental Checking Mailbox Status and Using the Internet DNS to RFC 3685 / PS RFC 5235 / PS RFC 6558 / PS Equivalences between Using the Internet DNS to Accessing Mailbox Metadata Distribute MIXER SIEVE Email Filtering: Spamtest Sieve Email Filtering: Spamtest Sieve Extension for Converting 1988 X.400 and RFC-822 Distribute RFC1327 Mail Conformant Global Address and VirusTest Extensions and Virustest Extensions Messages before Delivery Message Bodies Address Mapping Tables Mapping (MCGAM) RFC 5703 / PS Sieve RFC 5260 / PS RFC 6009 / PS RFC 6609 / PS Sieve Sieve Email Filtering: Date Sieve Email Filtering: MIME Sieve Email Filtering: RFC 1649 / Informational RFC 1838 / Experimental Sieve Email Filtering: RFC 1506 / Informational RFC 2164 / PS and Index Extensions Part Tests, Iteration, Include Extension Operational Requirements Use of the X.500 Directory to Delivery Status Notifications A Tutorial on Gatewaying Use of an X.500/LDAP Extraction, Replacement, for X.400 Management support mapping between RFC 5293 / PS and Deliver-By Extensions between X.400 and directory to support MIXER and Enclosure MIXER Domains in the GO-MHS X.400 and RFC 822 Sieve Email Filtering: MIXER Internet Mail address mapping Community Addresses Editheader Extension

RFC 1738 / PS RFC 6196 / PS RFC 2368 / PS RFC 6068 / PS Uniform Resource Locators Moving mailserver: URI mailto URI The mailto URL scheme The 'mailto' URI Scheme mailto URI (URL) Scheme to Historic

RFC 2369 / PS RFC 2919 / PS RFC 1049 / Historic RFC 2076 / Informational The Use of as Meta-Syntax RFC 3864 / BCP 90 RFC 5335 / Experimental RFC 6532 / PS List-Id: A Structured Field Content-type header field Common Internet Message for Core Mail List Commands and Registration Procedures for Internationalized Email Internationalized Email and Namespace for the for Internet messages Headers their Transport through Message Message Header Fields Headers Headers EAI Identification of Mailing Lists EAI MessageMessage Format Format Header Fields RFC 822 / STD 11 RFC 6854 / PS RFC 8058 / PS STANDARD FOR THE Update to Internet Message RFC 2822 / PS RFC 5322 / DS Signaling One-Click FORMAT OF ARPA Format to Allow Group Internet Message Format Internet Message Format Functionality for List Email INTERNET TEXT Syntax in the "From:" and Headers MESSAGES "Sender:" Header Fields

RFC 934 RFC 6648 / BCP 178 RFC 1154 / Experimental RFC 1505 / Experimental RFC 1766 / PS RFC 4021 / PS RFC 5064 / PS RFC 7444 / PS Proposed Standard RFC 3282 / DS Deprecating the "X-" Prefix Encoding header field for Encoding Header Field for Tags for the Identification of Registration of Mail and The Archived-At Message Security Labels in Internet for Message Content Language Headers and Similar Constructs in internet messages Internet Messages Languages MIME Header Fields Header Field Email Encapsulation Application Protocols

RFC 1341 / PS RFC 1521 / DS RFC 2045 / DS RFC 4096 / Informational RFC 6477 / Informational RFC 7912 / Informational MIME (Multipurpose Internet Mail MIME (Multipurpose Internet Mail Multipurpose Internet Mail Policy-Mandated Labels Such Registration of Military Message Authorizing Email Extensions): Mechanisms for Extensions) Part One: Mechanisms Extensions (MIME) Part as "Adv:" in Email Subject Message Handling System Header Field and Its Use for Specifying and Describing the for Specifying and Describing the One: Format of Internet Headers Considered (MMHS) Header Fields for the Draft and Release Format of Internet Message Bodies Format of Internet Message Bodies Message Bodies Ineffective At Best Use in Internet Mails Procedure

RFC 1522 / DS RFC 4249 / Informational RFC 1342 / PS RFC 2046 / DS MIME (Multipurpose Internet RFC 2646 / PS RFC 3676 / PS Implementer-Friendly Representation of Non- Multipurpose Internet Mail Mail Extensions) Part Two: The Text/Plain Format The Text/Plain Format and Specification of Message and ASCII Text in Internet Extensions (MIME) Part Message Header Extensions Parameter DelSp Parameters MIME-Part Header Fields and Message Headers Two: Media Types for Non-ASCII Text Field Components

RFC 2047 / DS RFC 1343 / Informational RFC 1524 / Informational MIME (Multipurpose Internet RFC 2278 / PS RFC 2789 / BCP 19 RFC 4288 / BCP 13 RFC 6838 / BCP 13 A User Agent Configuration A User Agent Configuration Mail Extensions) Part Three: IANA Charset Registration IANA Charset Registration Media Type Specifications Media Type Specifications Mechanism for Multimedia Mechanism For Multimedia Message Header Extensions Procedures Procedures and Registration Procedures and Registration Procedures Mail Format Information Mail Format Information for Non-ASCII Text

RFC 2048 / BCP 13 RFC 4289 / BCP 13 RFC 6657 / PS RFC 1344 / Informational RFC 1590 / Informational Multipurpose Internet Mail Multipurpose Internet Mail Update to MIME regarding Implications of MIME for Media Type Registration Extensions (MIME) Part Extensions (MIME) Part "charset" Parameter Internet Mail Gateways Procedure Four: Registration Four: Registration Handling in Textual Media Procedures Procedures Types

RFC 2049 / DS RFC 2184 / PS RFC 2231 / PS RFC 1544 / PS RFC 1864 / DS Multipurpose Internet MIME Parameter Value and MIME Parameter Value and RFC 5147 / PS RFC 6839 / Informational The Content-MD5 Header The Content-MD5 Mail Extensions (MIME) Encoded Word Extensions: Encoded Word Extensions: URI Fragment Identifiers for Additional Media Type Field Header Field Part Five: Conformance Character Sets, Languages, Character Sets, Languages, the text/plain Media Type Structured Syntax Suffixes Criteria and Examples and Continuations and Continuations

RFC 1806 / Experimental RFC 2183 / PS Communicating Communicating Presentation RFC 3023 / PS RFC 7303 / PS Presentation Information in Information in Internet XML Media Types XML Media Types Internet Messages: The Messages: The Content- Content-Disposition Header Disposition Header Field

RFC 2110 / PS RFC 2557 / PS RFC 6471 / Informational Unknown RFC 1820 / Informational RFC 5782 / Informational RFC 7070 / PS MIME E-mail Encapsulation MIME Encapsulation of Overview of Best Email Multimedia E-mail (MIME) DNS Blacklists and An Architecture for of Aggregate Documents, Aggregate Documents, such DNSBL DNS-Based List (DNSBL) User Agent Checklist DNSBL Whitelists Reputation Reporting such as HTML (MHTML) as HTML (MHTML) Operational Practices

Standard RFC 6647 / PS RFC 1844 / Informational RFC 2111 / PS RFC 2392 / PS RFC 7071 / PS Email : An Multimedia E-mail (MIME) Content-ID and Message-ID Content-ID and Message-ID Greylisting A Media Type for Reputation Greylisting Applicability Statement for User Agent Checklist Uniform Resource Locators Uniform Resource Locators Interchange SMTP Draft RFC 1563 / RFC 2387 / PS Standard RFC 1872 / Experimental RFC 2112 / PS Informational The MIME RFC 7072 / PS The MIME Multipart/Related The MIME Multipart/Related The text/enriched Multipart/Related A Reputation Query Protocol Content-type Content-type MIME Content-type Content-type Proposed RFC 1896 / RFC 2077 / PS Standard RFC 1523 / Informational RFC 7073 / PS RFC 1740 / PS Informational The Model Primary Content RFC 2376 / Informational The text/enriched MIME A Reputation Response Set MIME Encapsulation of The text/enriched Type for Multipurpose XML Media Types Content-type for Email Identifiers Macintosh Files - MIME Content-type Internet Mail Extensions ReputationReputation MacMIME Best Current RFC 1873 / RFC 6650 / PS Practice RFC 1741 / Informational Experimental RFC 2017 / PS RFC 2442 / Informational RFC 5965 / PS Creation and Use of Email Feedback MIME Content Type for Message/External- Definition of the URL MIME The Batch SMTP Media An Extensible Format for Reports: An Applicability Statement for BinHex Encoded Files Body Content-ID External-Body Access-Type Type Email Feedback Reports MIME the Abuse Reporting Format (ARF) MIME Access Type Informational RFC 2303 / PS RFC 3191 / DS RFC 3773 / Informational RFC 4142 / PS RFC 6651 / PS Minimal PSTN address Minimal GSTN address High-Level Requirements Full-mode Fax Profile for Extensions to DomainKeys Identified format in Internet Mail format in Internet Mail for Internet Voice Mail Internet Mail (FFPIM) Mail (DKIM) for Failure Reporting

Experimental RFC 3249 / Informational RFC 4143 / PS RFC 6652 / PS RFC 2304 / PS RFC 3192 / DS Implementers Guide for Facsimile Using Internet Sender Policy Framework (SPF) Minimal FAX address format Minimal FAX address Facsimile Using Internet Mail (IFAX) Service of Authentication Failure Reporting Using in Internet Mail format in Internet Mail Mail ENUM the Abuse Reporting Format Historic RFC 6590 / PS RFC 3965 / DS RFC 2305 / PS Redaction of Potentially A Simple Mode of Facsimile A Simple Mode of Facsimile Sensitive Data from Mail Using Internet Mail Using Internet Mail Abuse Reports Obsolete RFC 2846 / PS RFC 3297 / PS RFC 6591 / PS RFC 2532 / PS FAX for Internet Mail GSTN Address Element Content Negotiation for Authentication Failure FAX for Internet Mail Extended Facsimile Using DMARC Extensions in E-mail Messaging Services based Reporting Using the Abuse DMARC Internet Mail Services on Email Reporting Format Update RFC 4356 / PS RFC 7960 / Informational RFC 6430 / PS RFC 6692 / PS RFC 7489 / Informational RFC 1911 / Experimental RFC 2421 / PS RFC 3801 / DS Mapping Between the Interoperability Issues between Domain- RFC 5518 / PS Email Feedback Source Ports in Abuse Domain-based Message Voice Profile for Internet Voice Profile for Internet Voice Profile for Internet Multimedia Messaging based Message Authentication, Obsolete Vouch By Reference Report Type Reporting Format (ARF) Authentication, Reporting, Mail Mail - version 2 Mail - version 2 (VPIMv2) Service (MMS) and Internet Reporting, and Conformance (DMARC) Value: not-spam Reports and Conformance (DMARC) Mail and Indirect Email Flows

RFC 3802 / DS RFC 2422 / PS RFC 6449 / Informational Toll Quality Voice - 32 kbit/s RFC 7372 / PS Toll Quality Voice - 32 kbit/s Complaint Feedback Loop Adaptive Differential Pulse ADPCM MIME Sub-type Vouch Operational Code Modulation (ADPCM) Vouch Abuse Reports Status Codes Authentication Status Registration Abuse Reports Recommendations Authentication Status MIME Sub-type Registration

RFC 4405 / Experimental RFC 5451 / Informational RFC 7001 / PS RFC 7601 / PS RFC 2423 / PS RFC 3803 / PS SMTP Service Extension for Message Header Field for Message Header Field for Message Header Field for VPIM Voice Message MIME Content Duration MIME Indicating the Responsible Indicating Message Indicating Message Indicating Message Sub-type Registration Header Definition Submitter of an E-Mail Authentication Status Authentication Status Authentication Status Message

RFC 6577 / Informational RFC 6212 / PS RFC 7410 / PS RFC 2424 / PS RFC 3804 / PS RFC 4406 / Experimental Authentication-Results Authentication-Results A Property Types Registry Content Duration MIME Voice Profile for Internet Sender ID: Authenticating E- Registration Update for Registration for Vouch for the Authentication- Header Definition Mail (VPIM) Addressing Mail Sender Policy Framework Authentication-Results by Reference Results Results Header Field Authentication-Results (SPF) Results

RFC 6686 / Informational RFC 3458 / PS RFC 3938 / PS RFC 4407 / Experimental Resolution of the Sender Message Context for Video-Message Message- Purported Responsible Policy Framework (SPF) Internet Mail Context Address in E-Mail Messages Message Format, MIME and Sender ID Experiments Message Format, MIME Voice Profile for Internet Mail RFC 3459 / PS RFC 4408 / Experimental Voice Profile for Internet Mail RFC 7208 / PS Critical Content Multi- RFC 3939 / PS Sender Policy Framework Sender Policy Framework purpose Internet Mail Calling Line Identification for (SPF) for Authorizing Use of (SPF) for Authorizing Use of Extensions (MIME) Voice Mail Messages Domains in E-Mail, Version Domains in Email, Version 1 Sender ID / SPF Parameter 1 Sender ID / SPF

RFC 2635 / FYI 35 RFC 5016 / Informational RFC 5585 / RFC 5863 / Informational RFC 1847 / PS RFC 4686 / Informational DON'T SPEW A Set of Requirements for a Informational DomainKeys Identified Mail RFC 6376 / STD 76 Security Multiparts for Analysis of Threats Guidelines for Mass DomainKeys Identified Mail DomainKeys Identified (DKIM) Development, DomainKeys Identified Mail MIME: Multipart/Signed and Motivating DomainKeys Unsolicited Mailings and (DKIM) Signing Practices Mail (DKIM) Service Deployment, and (DKIM) Signatures Multipart/Encrypted Identified Mail (DKIM) Postings (spam*) Protocol Overview Operations

RFC 4870 / Informational RFC 5617 / PS RFC 1848 / Historic RFC 2480 / PS Domain-Based Email RFC 6377 / BCP 167 MIME Security Multiparts, MOSS DomainKeys Identified Mail MIME Object Security MIME Security Multiparts, MOSS Gateways and MIME Authentication Using Public DomainKeys Identified Mail (DKIM) Author Domain Services Security Multiparts Keys Advertised in the DNS (DKIM) and Mailing Lists Signing Practices (ADSP) (DomainKeys)

RFC 6541 / Experimental RFC 2015 / PS RFC 3156 / PS RFC 4871 / Informational RFC 5672 / Informational DomainKeys Identified Mail MIME Security with Pretty MIME Security with DomainKeys Identified Mail DomainKeys Identified Mail (DKIM) Authorized Third- Good Privacy (PGP) OpenPGP (DKIM) Signatures (DKIM) Signatures -- Update DomainKeysDomainKeys / /DKIM DKIM RFC 2726 / PS Party Signatures PGP Authentication for RIPE Database Updates RFC 7929 / Experimental RFC 1991 / Informational RFC 5581 / PS RFC 6637 / PS RFC 2440 / Informational RFC 4880 / PS DNS-Based Authentication PGP Message Exchange The Camellia Cipher in Elliptic Curve Cryptography PGP / OpenPGP OpenPGP Message Format OpenPGP Message Format PGP / OpenPGP of Named Entities (DANE) Formats OpenPGP (ECC) in OpenPGP Bindings for OpenPGP

RFC 3850 / PS RFC 5750 / PS RFC 6109 / Informational RFC 7107 / Informational RFC 8162 / Experimental RFC 2311 / Historic RFC 2632 / PS Secure/Multipurpose Secure/Multipurpose RFC 7508 / Experimental La Posta Elettronica Object Identifier Registry for Using Secure DNS to S/MIME Version 2 Message S/MIME Version 3 Internet Mail Extensions Internet Mail Extensions Securing Header Fields with Certificata - Italian Certified the S/MIME Mail Security Associate Certificates with Specification Certificate Handling (S/MIME) Version 3.1 (S/MIME) Version 3.2 S/MIME Electronic Mail Working Group Domain Names for S/MIME Certificate Handling Certificate Handling

RFC 3851 / PS RFC 5751 / PS RFC 7114 / PS RFC 2312 / Historic RFC 2633 / PS Secure/Multipurpose Secure/Multipurpose Creation of a Registry for S/MIME Version 2 S/MIME Version 3 Message Internet Mail Extensions Internet Mail Extensions smime-type Parameter Certificate Handling Specification (S/MIME) Version 3.1 (S/MIME) Version 3.2 Values Message Specification Message Specification

RFC 6210 / Experimental RFC 5035 / PS RFC 5752 / PS RFC 7281 / Informational RFC 2313 / Informational RFC 2634 / PS Experiment: Hash Functions Enhanced Security Services Multiple Signatures in Authentication-Results PKCS #1: RSA Encryption Enhanced Security Services with Parameters in the RFC 3447 / Informational (ESS) Update: Adding Cryptographic Message Registration for S/MIME Version 1.5 for S/MIME Cryptographic Message RFC 8017 / Experimental Public-Key Cryptography CertID Algorithm Agility Syntax (CMS) Signature Verification Syntax (CMS) and S/MIME PKCS #1: RSA Standards (PKCS) #1: RSA RFC 3278 / PS RFC 5753 / Informational Cryptography Specifications RFC 2437 / Informational RFC 2985 / Informational Cryptography Specifications RFC 6211 / Informational Use of Elliptic Curve Use of Elliptic Curve Version 2.2 PKCS #1: RSA PKCS #9: Selected Object Version 2.1 Cryptographic Message Cryptography (ECC) Cryptography (ECC) Cryptography Specifications Classes and Attribute Types Syntax (CMS) Algorithm Algorithms in Cryptographic RFC 5083 / PS Algorithms in Cryptographic Version 2.0 Version 2.0 Identifier Protection Attribute Message Syntax (CMS) Cryptographic Message Message Syntax (CMS) Syntax (CMS) RFC 4262 / PS RFC 2986 / Informational Authenticated-Enveloped- RFC 5754 / PS RFC 2314 / Informational RFC 3370 / Informational X.509 Certificate Extension PKCS #10: Certification Data Content Type Using SHA2 Algorithms with PKCS #10: Certification Cryptographic Message for Secure/Multipurpose Request Syntax Cryptographic Message Request Syntax Version 1.5 Syntax (CMS) Algorithms Internet Mail Extensions Specification Version 1.7 RFC 4853 / PS Syntax (S/MIME) Capabilities Cryptographic Message Syntax (CMS) Multiple RFC 5652 / STD 70 RFC 2315 / Informational RFC 2630 / PS RFC 3369 / PS RFC 3852 / PS Signer Clarification RFC 5967 / Informational Cryptographic PKCS #7: Cryptographic Cryptographic Message Cryptographic Message Cryptographic Message The application/pkcs10 Message Syntax Message Syntax Version 1.5 Syntax Syntax (CMS) Syntax (CMS) Media Type (CMS)

RFC 3853 / PS RFC 6268 / Informational RFC 5911 / Informational RFC 2631 / PS RFC 3211 / PS S/MIME Advanced Encryption Additional New ASN.1 Modules New ASN.1 Modules for Diffie-Hellman Key Password-based Encryption Standard (AES) Requirement for the Cryptographic Message Cryptographic Message Agreement Method for CMS for the Session Initiation Syntax (CMS) and the Public Key Syntax (CMS) and S/MIME Protocol (SIP) Infrastructure Using X.509 (PKIX)

RFC 2785 / Informational RFC 3854 / PS RFC 6318 / Informational RFC 3114 / Informational RFC 5008 / Informational Methods for Avoiding the Securing X.400 Content RFC 4134 / Informational Suite B in RFC 6664 / Informational Implementing Company Suite B in "Small-Subgroup" Attacks on with Secure/Multipurpose Examples of S/MIME Secure/Multipurpose S/MIME Capabilities for Classification Policy with the Secure/Multipurpose the Diffie-Hellman Key Internet Mail Extensions Messages Internet Mail Extensions Public Key Definitions S/MIME Security Label Internet Mail Extensions Agreement Method for S/MIME (S/MIME) (S/MIME) (S/MIME) RFC 3855 / PS Privacy, Email Authentication, Anti-Abuse RFC 3183 / Experimental Transporting Privacy, Email Authentication, Anti-Abuse Domain Security Services Secure/Multipurpose using S/MIME Internet Mail Extensions S/MIMES/MIME (S/MIME) Objects in X.400

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