| 822 | STANDARD FOR THE FORMAT OF ARPA INTERNET TEXT MESSAGESD. Crocker · obsoleted by RFC 2822 | Internet Standard | August 1982 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2342 | IMAP4 NamespaceM. Gahrns, C. Newman | Proposed Standard | May 1998 |
| 3501 | INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1M. Crispin · obsoleted by RFC 9051 | Proposed Standard | March 2003 |
| 3629 | UTF-8, a transformation format of ISO 10646F. Yergeau | Internet Standard | November 2003 |
| 4314 | IMAP4 Access Control List (ACL) ExtensionA. Melnikov | Proposed Standard | December 2005 |
| 5161 | The IMAP ENABLE ExtensionA. Gulbrandsen, Ed., A. Melnikov, Ed. | Proposed Standard | March 2008 |
| 5198 | Unicode Format for Network InterchangeJ. Klensin, M. Padlipsky | Proposed Standard | March 2008 |
| 5234 | Augmented BNF for Syntax Specifications: ABNFD. Crocker, Ed., P. Overell | Internet Standard | January 2008 |
| 5322 | Internet Message FormatP. Resnick, Ed. | Draft Standard | October 2008 |
| 5530 | IMAP Response CodesA. Gulbrandsen | Proposed Standard | May 2009 |
| 5738 | IMAP Support for UTF-8P. Resnick, C. Newman · obsoleted by RFC 6855 | Experimental | March 2010 |
| 6530 | Overview and Framework for Internationalized EmailJ. Klensin, Y. Ko | Proposed Standard | February 2012 |
| 6532 | Internationalized Email HeadersA. Yang, S. Steele, N. Freed | Proposed Standard | February 2012 |
| 6855 | IMAP Support for UTF-8P. Resnick, Ed., C. Newman, Ed., S. Shen, Ed. · obsoleted by RFC 9755 | Proposed Standard | March 2013 |
| 6857 | Post-Delivery Message Downgrading for Internationalized Email MessagesK. Fujiwara | Proposed Standard | March 2013 |
| 6858 | Simplified POP and IMAP Downgrading for Internationalized EmailA. Gulbrandsen | Proposed Standard | March 2013 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 2016 |
| 7888 | IMAP4 Non-synchronizing LiteralsA. Melnikov, Ed. | Proposed Standard | May 2016 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8265 | Preparation, Enforcement, and Comparison of Internationalized Strings Representing Usernames and PasswordsP. Saint-Andre, A. Melnikov | Proposed Standard | October 2017 |
| 8620 | The JSON Meta Application Protocol (JMAP)N. Jenkins, C. Newman | Proposed Standard | July 2019 |
| 9051 | Internet Message Access Protocol (IMAP) - Version 4rev2A. Melnikov, Ed., B. Leiba, Ed. | Proposed Standard | August 2021 |