RFCs conformed

email

• RFC822 - Standard for ARPA Internet Text Messages

• RFC2822 - Internet Message Format (updated RFC822)

• RFC2045 - Multipurpose Internet Mail Extensions (MIME) (part 1)

• RFC2046 - Multipurpose Internet Mail Extensions (MIME) (part 2)

• RFC2047 - Multipurpose Internet Mail Extensions (MIME) (part 3)

• RFC2048 - Multipurpose Internet Mail Extensions (MIME) (part 4)

• RFC2049 - Multipurpose Internet Mail Extensions (MIME) (part 5)

Auth

• RFC2245 - Anonymous SASL Mechanism.

• RFC2595 - Using TLS with IMAP, POP3 and ACAP

• RFC2831 - Using Digest Authentication as a SASL Mechanism (DIGEST-MD5)

• RFC5802 - Salted Challenge Response Authentication Mechanism (SCRAM)

• RFC4752 - GSS-API (Kerberos V5) SASL Mechanism

• RFC7628 - A Set of Simple Authentication and Security Layer (SASL) Mechanisms for OAuth

• Google XOAUTH2 protocol

POP3

• RFC1939 - Post Office Protocol - Version 3

• RFC2449 - POP3 Extension Mechanism

• RFC2595 - Using TLS with IMAP, POP3 and ACAP

• RFC3206 - The SYS and AUTH POP Response Codes

• RFC5034 - The Post Office Protocol (POP3) - Simple Authentication and Security Layer (SASL) Authentication Mechanism

IMAP base

• RFC3501 - IMAP4rev1

• RFC2180 - IMAP4 Multi-Accessed Mailbox Practice

• RFC2595 - Using TLS with IMAP, POP3 and ACAP

• RFC2683 - IMAP4 Implementation Recommendations

IMAP extensions

• RFC2087 - IMAP4 QUOTA extension

• RFC2088 - IMAP4 non-synchronizing literals (LITERAL+)

• RFC2177 - IMAP4 IDLE command

• RFC2221 - IMAP4 Login Referrals

• RFC2342 - IMAP4 Namespace

• RFC2971 - IMAP4 ID extension

• RFC3348 - IMAP4 Child Mailbox Extension

• RFC3502 - IMAP4 MULTIAPPEND Extension

• RFC3516 - IMAP4 Binary Content Extension

• RFC3691 - IMAP4 UNSELECT command

• RFC4314 - IMAP4 Access Control List (ACL) Extension

• RFC4315 - IMAP UIDPLUS extension

• RFC4467 - IMAP URLAUTH Extension

• RFC4469 - IMAP CATENATE Extension

• RFC4551 - IMAP Extension for Conditional STORE Operation or Quick Flag Changes Resynchronization

• RFC4731 - IMAP4 Extension to SEARCH Command for Controlling What Kind of Information Is Returned

• RFC4959 - IMAP Extension for Simple Authentication and Security Layer (SASL) Initial Client Response

• RFC4978 - The IMAP COMPRESS Extension

• RFC5032 - WITHIN Search Extension to the IMAP Protocol

• RFC5161 - The IMAP ENABLE Extension

• RFC5162 - IMAP4 Extensions for Quick Mailbox Resynchronization

• RFC5182 - IMAP Extension for Referencing the Last SEARCH Result

• RFC5255 - IMAP Internationalization (I18NLEVEL=1 only)

• RFC5256 - IMAP SORT and THREAD Extensions

• RFC5258 - IMAP4 - LIST Command Extensions

• RFC5267 - Contexts for IMAP4 (ESORT and CONTEXT=SEARCH only)

• RFC5464 - The IMAP METADATA Extension

• RFC5465 - The IMAP NOTIFY Extension

• RFC5524 - Extended URLFETCH for Binary and Converted Parts

• RFC5530 - IMAP Response Codes

• RFC5819 - IMAP4 Extension for Returning STATUS Information in Extended LIST

• RFC5957 - Display-Based Address Sorting for the IMAP4 SORT Extension

• RFC6154 - IMAP LIST Extension for Special-Use Mailboxes (SPECIAL-USE only)

• RFC6203 - IMAP4 Extension for Fuzzy Search

• RFC6785 - Support for IMAP Events in Sieve (via Pigeonhole plugin)

• RFC6851 - Internet Message Access Protocol (IMAP) - MOVE Extension

• RFC7162 - IMAP Extensions: Quick Flag Changes Resynchronization (CONDSTORE) and Quick Mailbox Resynchronization (QRESYNC) (updated RFC4551 and RFC5162)

• RFC7888 - IMAP4 Non-synchronizing Literals (updated RFC2088)

• RFC8457 - IMAP “$Important” Keyword and “:raw-latex:Important`” Special-Use Attribute <https://tools.ietf.org/html/rfc8457>`__

• RFC8970 - IMAP4 Extension: Message Preview Generation

SMTP/LMTP base

• RFC821 - Simple Mail Transfer Protocol

• RFC2821 - Simple Mail Transfer Protocol (updated RFC821)

• RFC5321 - Simple Mail Transfer Protocol (updated RFC2821)

• RFC2033 - Local Mail Transfer Protocol

• RFC6409 - Message Submission for Mail

SMTP/LMTP extensions

• RFC1870 - SMTP Service Extension for Message Size Declaration

• RFC2034 - SMTP Service Extension for Returning Enhanced Error Codes

• RFC2920 - SMTP Service Extension for Command Pipelining

• RFC3030 - SMTP Service Extensions for Transmission of Large and Binary MIME Messages

• RFC3207 - SMTP Service Extension for Secure SMTP over Transport Layer Security

• RFC4468 - Message Submission BURL Extension

• RFC4954 - SMTP Service Extension for Authentication

• RFC6152 - SMTP Service Extension for 8-bit MIME Transport