= Specifications =

 * [[http://www.ietf.org/rfc/rfc3501.txt|RFC 3501]]: IMAP4rev1
  * [[Specs/Rfc3501Problems|Problems with RFC 3501]]

IETF groups:

 * [[http://datatracker.ietf.org/wg/imap/charter/|IETF imap charter]] (1993; concluded)
 * [[http://datatracker.ietf.org/wg/imapext/charter/|IETF imapext charter]] (2000; concluded)
 * [[http://datatracker.ietf.org/wg/lemonade/charter/|IETF LEMONADE charter]] (2003; concluded)
 * [[http://datatracker.ietf.org/wg/morg/charter/|IETF morg charter]] (2009; concluded)
 * [[http://datatracker.ietf.org/wg/imapmove/charter/|IETF imapmove charter]] (2012; concluded)
 * [[http://datatracker.ietf.org/wg/qresync/charter/|IETF qresync charter]] (2013; concluded)
 * [[http://datatracker.ietf.org/wg/imapapnd/charter/|IETF imapapnd charter]] (2014; concluded)
 * [[https://datatracker.ietf.org/wg/extra/about/|IETF extra charter]] (2017; active)

IMAP extensions and server support:

|| '''RFC''' || '''Name''' || '''Capability name''' || '''[[http://www.agorum.com/homepage/english/product-overview-of-open-source-dms-ecm.html|Agorum Core]]'''|| '''[[http://james.apache.org/protocols/imap4.html|Apache James]]''' || '''[[http://archiveopteryx.org|Archive​opteryx]]''' || '''[[http://www.axigen.com/docs/70/RFCs-Currently-Implemented-by-AXIGEN_191.html|Axigen]]''' || '''[[http://www.citadel.org/|Citadel]]''' || '''[[http://www.communigate.com/cgatepro/Features.html#IMAP|Communigate Pro]]''' || '''[[http://www.courier-mta.org/imap/|Courier]]''' || '''[[https://www.cyrusimap.org|Cyrus]]''' || '''[[http://www.dbmail.org/|DBMail]]''' || '''[[http://www.dovecot.org/|Dovecot]]''' || '''[[http://www.gmail.com/|GMail]]''' || '''[[http://www.icewarp.com|IceWarp]]''' || '''[[http://www.isode.com/products/m-box.html|Isode]]''' || '''[[http://www.kerio.com/products/kerio-connect|Kerio Connect]]''' || '''[[http://www.altn.com/|MDaemon]]''' || '''[[https://office.microsoft.com/en-us/|Microsoft Exchange]]''' ||  '''[[http://www.oracle.com/us/products/applications/communications/unified-communications/messaging-server/overview/index.html|Oracle]]''' || '''[[http://www.washington.edu/imap/|UW-IMAP]]''' || '''[[http://www.wingate.com/|WinGate 7]]''' || '''[[http://www.zimbra.com/|Zimbra]]''' ||
|| 2087 || [[http://www.ietf.org/rfc/rfc2087.txt|IMAP4 QUOTA extension]] || QUOTA ||<#ff6666>no ||<#66ff66>3.0 ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>v1.0 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes  ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||
|| 2177 || [[http://www.ietf.org/rfc/rfc2177.txt|IMAP4 IDLE command]] || IDLE ^(L)^ ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>v2.0 ||<#66ff66>yes ||<#66ff66>v1.0 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>v6.3 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||
|| 2193 || [[http://www.ietf.org/rfc/rfc2193.txt|IMAP4 Mailbox Referrals]] || MAILBOX-REFERRALS ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.1 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||
|| 2221 || [[http://www.ietf.org/rfc/rfc2221.txt|IMAP4 Login Referrals]] || LOGIN-REFERRALS ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v1.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||
|| 2342 || [[http://www.ietf.org/rfc/rfc2342.txt|IMAP4 Namespace]] || NAMESPACE ^(L)^ ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>v1.6 ||<#66ff66>yes ||<#66ff66>v1.0 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||
|| 2971 || [[http://www.ietf.org/rfc/rfc2971.txt|IMAP4 ID extension]] || ID ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>v1.6 ||<#ff6666>no ||<#66ff66>v1.2 ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no  ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>v7u4 ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||
|| 3348 || [[http://www.ietf.org/rfc/rfc3348.txt|IMAP4 Child Mailbox Extension]] || CHILDREN ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>v2.1 ||<#66ff66>yes ||<#66ff66>v1.0 ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||
|| 3502 || [[http://www.ietf.org/rfc/rfc3502.txt|IMAP4 MULTIAPPEND Extension]] || MULTIAPPEND ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>v2.0 ||<#ff6666>no ||<#66ff66>v1.0 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||
|| 3516 || [[http://www.ietf.org/rfc/rfc3516.txt|IMAP4 Binary Content Extension]] || BINARY ^(L)^ ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>v2.2 ||<#ff6666>no ||<#66ff66>v2.2 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||
|| 3691 || [[http://www.ietf.org/rfc/rfc3691.txt|IMAP4 UNSELECT command]] || UNSELECT ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>v1.6 ||<#66ff66>yes ||<#66ff66>v1.0 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>v6.3 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||
|| 4314 || [[http://www.ietf.org/rfc/rfc4314.txt|IMAP4 Access Control List (ACL) Extension]] || ACL ||<#ff6666>no ||<#66ff66>3.0 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>v1.2 ||<#ff6666>no ||<#66ff66>v10.0 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>v7u5 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||
|| 4314 || [[http://www.ietf.org/rfc/rfc4314.txt|IMAP4 Access Control List (ACL) Extension]] || RIGHTS=* ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.3 ||<#ff6666>no ||<#66ff66>v1.2 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7u5 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||
|| 4315 || [[http://www.ietf.org/rfc/rfc4315.txt|IMAP UIDPLUS extension]] || UIDPLUS ^(L)^ ||<#66ff66>yes ||<#66ff66>yes  ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>v1.6 ||<#ff6666>no ||<#66ff66>v1.1 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||
|| 4467 || [[http://www.ietf.org/rfc/rfc4467.txt|IMAP - URLAUTH Extension]] || URLAUTH ^(L)^ ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.4 ||<#ff6666>no ||<#66ff66>v2.2 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 4469 || [[http://www.ietf.org/rfc/rfc4469.txt|IMAP CATENATE Extension]] || CATENATE ^(L)^ ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.3 ||<#ff6666>no ||<#66ff66>v2.2 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||
|| 4731 || [[http://www.ietf.org/rfc/rfc4731.txt|IMAP4 Extension to SEARCH Command for Controlling What Kind of Information Is Returned]] || ESEARCH ^(L)^ ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>v2.4 ||<#ff6666>no ||<#66ff66>v1.2 ||<#66ff66>yes||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||
|| 4959 || [[http://www.ietf.org/rfc/rfc4959.txt|IMAP Extension for Simple Authentication and Security Layer (SASL) Initial Client Response]] || SASL-IR ^(L)^ ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>v2.2 ||<#ff6666>no ||<#66ff66>v1.1 ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>v7.0 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||
|| 4978 || [[http://www.ietf.org/rfc/rfc4978.txt|The IMAP COMPRESS Extension]] || COMPRESS=DEFLATE ^(L)^ ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.4 ||<#ff6666>no ||<#66ff66>v2.0 ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||
|| 5032 || [[http://www.ietf.org/rfc/rfc5032.txt|WITHIN Search Extension to the IMAP Protocol]] || WITHIN ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.4 ||<#ff6666>no ||<#66ff66>v1.2 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||
|| 5161 || [[http://www.ietf.org/rfc/rfc5161.txt|The IMAP ENABLE Extension]] || ENABLE ^(L)^ ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>v1.2 ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||
|| 5182 || [[http://www.ietf.org/rfc/rfc5182.txt|IMAP Extension for Referencing the Last SEARCH Result]] || SEARCHRES ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v1.2 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7u2 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||
|| 5255 || [[http://www.ietf.org/rfc/rfc5255.txt|IMAP Internationalization]] || I18NLEVEL=1 ^(L)^ ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v1.1 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||
|| 5255 || [[http://www.ietf.org/rfc/rfc5255.txt|IMAP Internationalization]] || I18NLEVEL=2 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no  ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5255 || [[http://www.ietf.org/rfc/rfc5255.txt|IMAP Internationalization]] || LANGUAGE ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no  ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5256 || [[http://www.ietf.org/rfc/rfc5256.txt|IMAP SORT and THREAD Extensions]] || SORT ^(L)^ ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>v2.0 ||<#66ff66>yes ||<#66ff66>v1.0 ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v6.3 ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||
|| 5256 || [[http://www.ietf.org/rfc/rfc5256.txt|IMAP SORT and THREAD Extensions]] || THREAD=ORDEREDSUBJECT ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>v2.0 ||<#66ff66>yes ||<#66ff66>v2.1.10 ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||
|| 5256 || [[http://www.ietf.org/rfc/rfc5256.txt|IMAP SORT and THREAD Extensions]] || THREAD=REFERENCES ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>v2.0 ||<#ff6666>no ||<#66ff66>v1.0 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||
|| 5257 || [[http://www.ietf.org/rfc/rfc5257.txt|IMAP - ANNOTATE Extension]] || ANNOTATE-EXPERIMENT-1 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.5 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5258 || [[http://www.ietf.org/rfc/rfc5258.txt|IMAP4 - LIST Command Extensions]] || LIST-EXTENDED ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.4 ||<#ff6666>no ||<#66ff66>v1.1 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||
|| 5259 || [[http://www.ietf.org/rfc/rfc5259.txt|IMAP - CONVERT Extension]] || CONVERT ^(L)^ ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5267 || [[http://www.ietf.org/rfc/rfc5267.txt|Contexts for IMAP4]] || ESORT ^(L)^ ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v1.2 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||
|| 5267 || [[http://www.ietf.org/rfc/rfc5267.txt|Contexts for IMAP4]] || CONTEXT=SEARCH ^(L)^ ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v1.2 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5267 || [[http://www.ietf.org/rfc/rfc5267.txt|Contexts for IMAP4]] || CONTEXT=SORT ^(L)^ ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5464 || [[http://www.ietf.org/rfc/rfc5464.txt|The IMAP METADATA Extension]] || METADATA ||<#ff6666>no ||<#66ff66>3.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.5 ||<#ff6666>no ||<#66ff66>v2.2.7 ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0.5 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5465 || [[http://www.ietf.org/rfc/rfc5465.txt|The IMAP NOTIFY Extension]] || NOTIFY ^(L)^ ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.2 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5466 || [[http://www.ietf.org/rfc/rfc5466.txt|IMAP4 Extension for Named Searches (Filters)]] || FILTERS ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5524 || [[http://www.ietf.org/rfc/rfc5524.txt|Extended URLFETCH for Binary and Converted Parts]] || URLAUTH=BINARY ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.4 ||<#ff6666>no ||<#66ff66>v2.2 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5530 || [[http://www.ietf.org/rfc/rfc5530.txt|IMAP Response Codes]] || - ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v1.2 ||<#ff66ff>FIXME ||<#ff6666>no ||<#ff66ff>FIXME ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0.5 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5550 || [[http://www.ietf.org/rfc/rfc5550.txt|The Internet Email to Support Diverse Service Environments (Lemonade) Profile]] || URL-PARTIAL ^(L)^ ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.2 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5819 || [[http://www.ietf.org/rfc/rfc5819.txt|IMAP4 Extension for Returning STATUS Information in Extended LIST]] || LIST-STATUS ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.5 ||<#ff6666>no ||<#66ff66>v1.2 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v8.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 5957 || [[http://www.ietf.org/rfc/rfc5957.txt|Display-Based Address Sorting for the IMAP4 SORT Extension]] || SORT=DISPLAY ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>v1.2 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v8.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 6154 || [[http://www.ietf.org/rfc/rfc6154.txt|IMAP LIST Extension for Special-Use Mailboxes]] || SPECIAL-USE ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.5 ||<#ff6666>no ||<#66ff66>v2.1 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v16.1 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v8.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 6154 || [[http://www.ietf.org/rfc/rfc6154.txt|IMAP LIST Extension for Special-Use Mailboxes]] || CREATE-SPECIAL-USE ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.5 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>partial ||<#66ff66>v10.0? ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v8.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 6203 || [[http://www.ietf.org/rfc/rfc6203.txt|IMAP4 Extension for Fuzzy Search]] || SEARCH=FUZZY ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v3.0 ||<#ff6666>no ||<#66ff66>v2.1 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 6785 || [[http://www.ietf.org/rfc/rfc6785.txt|Support for Internet Message Access Protocol (IMAP) Events in Sieve]] || IMAPSIEVE=* ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.2 (plugin) ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 6851 || [[http://www.ietf.org/rfc/rfc6851.txt|IMAP MOVE Extension]] || MOVE ||<#ff6666>no ||<#66ff66>3.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.5 ||<#ff6666>no ||<#66ff66>v2.2 ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>v16.0 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||
|| 6855 || [[http://www.ietf.org/rfc/rfc6855.txt| IMAP Support for UTF-8]] || UTF8=* ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 7162 || [[http://www.ietf.org/rfc/rfc7162.txt|IMAP Extensions: Quick Flag Changes Resynchronization (CONDSTORE) and Quick Mailbox Resynchronization (QRESYNC)]] || CONDSTORE ^(L)^ ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.3 ||<#ff6666>no ||<#66ff66>v1.2 ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||
|| 7162 || [[http://www.ietf.org/rfc/rfc7162.txt|IMAP Extensions: Quick Flag Changes Resynchronization (CONDSTORE) and Quick Mailbox Resynchronization (QRESYNC)]] || QRESYNC ^(L)^ ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.4 ||<#ff6666>no ||<#66ff66>v1.2 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v7.0 ||<#ff6666>no ||<#ff6666>no ||<#66ff66>yes ||
|| 7377 || [[https://www.rfc-editor.org/rfc/rfc7377.txt|IMAP4 Multimailbox SEARCH Extension]] || MULTISEARCH ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v8.0 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 7888 || [[https://www.rfc-editor.org/rfc/rfc7888.txt|IMAP4 Non-synchronizing Literals]] || LITERAL+ ^(L)^ ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>v1.5 ||<#ff6666>no ||<#66ff66>v1.0 ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#ff6666>no ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||<#66ff66>yes ||
|| 7888 || [[https://www.rfc-editor.org/rfc/rfc7888.txt|IMAP4 Non-synchronizing Literals]] || LITERAL- ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>v2.3  ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 7889 || [[https://www.rfc-editor.org/rfc/rfc7889.txt|The IMAP APPENDLIMIT Extension]] || APPENDLIMIT ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 8437 || [[https://www.rfc-editor.org/rfc/rfc8437.txt|IMAP UNAUTHENTICATE Extension for Connection Reuse]] || UNAUTHENTICATE ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 8438 || [[https://www.rfc-editor.org/rfc/rfc8438.txt|IMAP Extension for STATUS=SIZE]] || STATUS=SIZE ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>2.3.10 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 8440 || [[https://www.rfc-editor.org/rfc/rfc8440.txt|IMAP4 Extension for Returning MYRIGHTS Information in Extended LIST]] || LIST-MYRIGHTS ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 8457 || [[https://www.rfc-editor.org/rfc/rfc8457.txt|IMAP "$Important" Keyword and "\Important" Special-Use Attribute]] || - ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>2.3.10 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 8474 || [[https://www.rfc-editor.org/rfc/rfc8474.txt|IMAP Extension for Object Identifiers]] || OBJECTID ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 8508 || [[https://www.rfc-editor.org/rfc/rfc8508.txt|IMAP REPLACE Extension]] || REPLACE ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||
|| 8514 || [[https://www.rfc-editor.org/rfc/rfc8514.txt|Internet Message Access Protocol (IMAP) - SAVEDATE Extension]] || SAVEDATE ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#66ff66>2.3.11 ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||<#ff6666>no ||



https://www.rfc-editor.org/info/rfc8438

 '''(L)''' Required for [[http://www.ietf.org/rfc/rfc5550.txt|LEMONADE profile]].

See also [[https://dovecot.github.io/imaptest/compliancy.html|servers' compliancy status]].