Internet Message Access Protocol (IMAP) 4 Capabilities Registry (last updated 2008-07-21) Registries included below: - IMAP 4 Capabilities Registry Name: IMAP 4 Capabilities Reference: [RFC3501] Registration Procedures: IETF Consensus Note: Capability names MUST either begin with "X" or be standard or standards-track IMAP4rev1 extensions, revisions, or amendments registered with IANA. A server MUST NOT offer unregistered or non-standard capability names, unless such names are prefixed with an "X". Client implementations SHOULD NOT require any capability name other than "IMAP4rev1", and MUST ignore any unknown capability names. Registry: Capability Name Reference -------------------------- ------------------ ACL [RFC2086][RFC4314] ANNOTATE-EXPERIMENT-1 [RFC5257] BINARY [RFC3516] CATENATE [RFC4469] COMPRESS=DEFLATE [RFC4978] CONDSTORE [RFC4551] CONTEXT=SEARCH [RFC5267] CONTEXT=SORT [RFC5267] CONVERT [RFC-ietf-lemonade-convert-20.txt] ENABLE [RFC5161] ESEARCH [RFC4731] ESORT [RFC5267] I18NLEVEL=1 [RFC5255] I18NLEVEL=2 [RFC5255] ID [RFC2971] IDLE [RFC2177] LANGUAGE [RFC5255] LITERAL+ [RFC2088] LOGIN-REFERRALS [RFC2221] LOGINDISABLED [RFC2595][RFC3501] MAILBOX-REFERRALS [RFC2193] MULTIAPPEND [RFC3502] NAMESPACE [RFC2342] QRESYNC [RFC5162] QUOTA [RFC2087] RIGHTS= [RFC4314] SASL-IR [RFC4959] SEARCHRES [RFC5182] SORT [RFC5256] STARTTLS [RFC2595][RFC3501] THREAD [RFC5256] UIDPLUS [RFC4315] UNSELECT [RFC3691] URLAUTH [RFC4467] WITHIN [RFC5032] References ---------- [RFC2060] Crispin, M., "Internet Message Access Protocol Version 4rev1", RFC 2060, December 1996. [RFC2086] Myers, J., "IMAP4 ACL extension", Carnegie Mellon, January 1997. [RFC2087] Myers, J., "IMAP4 QUOTA extension", Carnegie Mellon, January 1997. [RFC2088] Myers, J., "IMAP4 non-synchronizing literals", Carnegie Mellon, January 1997. [RFC2177] Leiba, B., "IMAP4 IDLE command", IBM T.J. Watson Research Center, June 1997. [RFC2193] Gahrns, M., "IMAP4 Mailbox Referrals", Microsoft, September 1997. [RFC2221] Gahrns, M., "IMAP4 Login Referrals", Microsoft, October 1997. [RFC2342] Gahrns, M., Newman, C., "IMAP4 Namespace", Microsoft, Innosoft, May 1998. [RFC2359] Myers, J., "IMAP4 UIDPLUS extension", Netscape Communications, June 1998. [RFC2595] Newman, C., "Using TLS with IMAP, POP3 and ACAP", RFC 2595, Innosoft, June 1999. [RFC2971] Showalter, T. "IMAP4 ID extension", RFC 2971, October 2000. [RFC3501] M. Crispin, "INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1", RFC 3501, March 2004. [RFC3502] M. Crispin, "Internet Message Access Protocol (IMAP) - MULTIAPPEND Extension", RFC 3502, March 2003. [RFC3516] L. Nerenberg, "IMAP4 Binary Content Extension", RFC 3516, April 2003. [RFC3691] A. Melnikov, "IMAP UNSELECT command", RFC 3691, February 2004. [RFC4314] A. Melnikov, "IMAP4 ACL extension", RFC 4314, December 2005. [RFC4315] M. Crispin, "Internet Message Access Protocol (IMAP) - UIDPLUS extension", RFC 4315, December 2005. [RFC4467] M. Crispin, "Internet Message Access Protocol (IMAP) - URLAUTH Extension", RFC 4467, May 2006. [RFC4469] P. Resnick, "Internet Message Access Protocol (IMAP) CATENATE Extension", RFC 4469, April 2006. [RFC4551] A. Melnikov and S. Hole, "IMAP Extension for Conditional STORE operation", RFC 4551, June 2006. [RFC4731] A. Melnikov, D. Cridland, "IMAP4 extension to SEARCH command for controlling what kind of information is returned", RFC 4731, November 2006. [RFC4959] Robert Siemborski and Arnt Gulbrandsen, "IMAP Extension for SASL Initial Client Response", RFC 4959, September 2007. [RFC4978] A. Gulbrandsen, "The IMAP COMPRESS Extension", RFC 4978, August 2007. [RFC5032] E. Burger, "WITHIN Search extension to the IMAP Protocol", RFC 5032, September 2007. [RFC5161] A. Gulbrandsen, A. Melnikov, "The IMAP ENABLE Extension", RFC 5161, March 2008. [RFC5162] A. Melnikov, D. Cridland, C. Wilson, "IMAP4 Extensions for Quick Mailbox Resynchronization", RFC 5162, March 2008. [RFC5182] A. Melnikov, "IMAP extension for referencing the last SEARCH result", RFC 5182, March 2008. [RFC5255] C. Newman, A. Gulbrandsen, A. Melnikov, "Internet Message Access Protocol Internationalization", RFC 5255, June 2008. [RFC5256] M. Crispin, K. Murchison, "Internet Message Access Protocol - SORT and THREAD Extensions", RFC 5256, June 2008. [RFC5257] C. Daboo and R. Gellens, "IMAP ANNOTATE Extension", RFC 5257, June 2008. [RFC-ietf-lemonade-convert-20.txt] A. Melnikov, Ed., P. Coates, Ed., "IMAP CONVERT extension", RFC XXXX, Month Year. [RFC5267] D. Cridland, C. King, "Contexts for IMAP4", RFC 5267, July 2008. []