Implements the following IMAP-related RFCs (see
http://www.iana.org/assignments/imap4-capabilities):
- RFC 2086/4314: ACL
- RFC 2087: QUOTA
- RFC 2088: LITERAL+
- RFC 2195: AUTH=CRAM-MD5
- RFC 2221: LOGIN-REFERRALS
- RFC 2342: NAMESPACE
- RFC 2595/4616: TLS & AUTH=PLAIN
- RFC 2831: DIGEST-MD5 authentication mechanism (obsoleted by RFC 6331)
- RFC 2971: ID
- RFC 3348: CHILDREN
- RFC 3501: IMAP4rev1 specification
- RFC 3502: MULTIAPPEND
- RFC 3516: BINARY
- RFC 3691: UNSELECT
- RFC 4315: UIDPLUS
- RFC 4422: SASL Authentication (for DIGEST-MD5)
- RFC 4466: Collected extensions (updates RFCs 2088, 3501, 3502, 3516)
- RFC 4469/5550: CATENATE
- RFC 4551: CONDSTORE
- RFC 4731: ESEARCH
- RFC 4959: SASL-IR
- RFC 5032: WITHIN
- RFC 5161: ENABLE
- RFC 5162: QRESYNC
- RFC 5182: SEARCHRES
- RFC 5255: LANGUAGE/I18NLEVEL
- RFC 5256: THREAD/SORT
- RFC 5258: LIST-EXTENDED
- RFC 5267: ESORT; PARTIAL search return option
- RFC 5464: METADATA
- RFC 5530: IMAP Response Codes
- RFC 5819: LIST-STATUS
- RFC 5957: SORT=DISPLAY
- RFC 6154: SPECIAL-USE/CREATE-SPECIAL-USE
- RFC 6203: SEARCH=FUZZY
Implements the following non-RFC extensions:
- draft-ietf-morg-inthread-01: THREAD=REFS
- draft-daboo-imap-annotatemore-07: ANNOTATEMORE
- draft-daboo-imap-annotatemore-08: ANNOTATEMORE2
- XIMAPPROXY
- Requires imapproxy v1.2.7-rc1 or later
- See https://squirrelmail.svn.sourceforge.net/svnroot/squirrelmail/trunk/imap_proxy/README
- RFC 2177: IDLE
- Probably not necessary due to the limited connection time of each HTTP/PHP request
- RFC 2193: MAILBOX-REFERRALS
- RFC 4467/5092/5524/5550/5593: URLAUTH, URLAUTH=BINARY, URL-PARTIAL
- RFC 4978: COMPRESS=DEFLATE
- See: http://bugs.php.net/bug.php?id=48725
- RFC 5257: ANNOTATE (Experimental)
- RFC 5259: CONVERT
- RFC 5267: CONTEXT=SEARCH; CONTEXT=SORT
- RFC 5465: NOTIFY
- RFC 5466: FILTERS
- RFC 5738: UTF8 (Very limited support currently)
- RFC 6237: MULTISEARCH
- draft-ietf-morg-inthread-01: SEARCH=INTHREAD
- Appears to be dead
- draft-krecicki-imap-move-01.txt: MOVE
- Appears to be dead