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An IMAP server developed at Carnegie Mellon University
Tested Cyrus IMAP4 v2.2.12-Invoca-RPM-2.2.12-6.fc4 CAPABILITY IMAP4 IMAP4rev1 ACL QUOTA LITERAL+ MAILBOX-REFERRALS NAMESPACE UIDPLUS ID NO_ATOMIC_RENAME UNSELECT CHILDREN MULTIAPPEND BINARY SORT THREAD=ORDEREDSUBJECT THREAD=REFERENCES ANNOTATEMORE IDLE LISTEXT LIST-SUBSCRIBED X-NETSCAPE PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen $MDNSent \*) NAMESPACE (("INBOX." ".")) (("user." ".")) (("shared." "."))
Server supports server side sorting since 2.0.4 version. Delimiter can be switched to /
Site URL: http://asg.web.cmu.edu/cyrus/
Part of University of Washington IMAP toolkit.
Tested 2002e (2003.339)
CAPABILITY IMAP4REV1 IDLE NAMESPACE MAILBOX-REFERRALS BINARY UNSELECT SCAN SORT THREAD=REFERENCES THREAD=ORDEREDSUBJECT MULTIAPPEND LOGIN-REFERRALS STARTTLS AUTH=LOGIN PERMANENTFLAGS (Seen \* \Answered \Flagged \Deleted \Draft \Seen) NAMESPACE (("" "/")("#mhinbox" NIL)("#mh/" "/")) (("~" "/")) (("#shared/" "/")("#ftp/" "/")("#news." ".")("#public/" "/"))
Server supports server side sorting. Plain text logins are disabled by default. Version visible in IMAP greeting can be used by more than one packaged version.
Site URL: http://www.washington.edu/imap/
Fast, scalable, enterprise IMAP server that uses Maildirs
CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION PERMANENTFLAGS (\* \Draft \Answered \Flagged \Deleted \Seen) NAMESPACE (("INBOX." ".")) NIL (("#shared." ".")("shared." "."))
Server can be compiled with custom set of supported character sets. Sorting can be disabled in imapd configuration. Capability string can be set in configuration. Supports CRAM-MD5, CRAM-SHA1 and CRAM-SHA256, if userdb or other backend stores passwords in plain text. Does not handle traditional mailbox files.
Site URL: http://www.courier-mta.org/
Open source email server for WinNT and later.
Tested 4.1.1 (Build 140).
CAPABILITY IMAP4 IMAP4rev1 QUOTA PERMANENTFLAGS (\Deleted \Seen \Draft \Answered \Flagged) namespace extension is not supported. Mailbox layout matches NAMESPACE (("" ".")) NIL NIL
Server side sorting is supported in 4.2+ versions
Site URL: http://www.hmailserver.com/
Mercury Mail Transport System. Free email server for Win32 and Netware.
Tested Win32 v.4.01b
CAPABILITY IMAP4rev1 X-MERCURY PERMANENTFLAGS (\Deleted \Draft \Seen \Answered)
Comments:
Site URL: http://www.pmail.com
Dovecot Secure IMAP server.
Tested v.0.99.14
CAPABILITY IMAP4rev1 SORT THREAD=REFERENCES MULTIAPPEND UNSELECT LITERAL+ IDLE CHILDREN LISTEXT LIST-SUBSCRIBED NAMESPACE PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)
Tested v.1.0.rc15
IMAP4rev1 SASL-IR SORT THREAD=REFERENCES MULTIAPPEND UNSELECT LITERAL+ IDLE CHILDREN NAMESPACE LOGIN-REFERRALS PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*) NAMESPACE (("" ".")) NIL NIL
IMAP server supports server side sorting and threading. 1.0alpha1-5 versions violate syntax of responses to UID commands. NAMESPACE is supported in 1.0alpha. Remote plain text logins are disabled by default. v.1.0 allows different namespace configurations with public and shared namespaces. Folder restrictions depend on used mailbox format.
Site URL: http://www.dovecot.org
Simple, lightweight IMAP server.
Tested v.1.2.13
CAPABILITY IMAP4rev1 STARTTLS AUTH=LOGIN AUTH=PLAIN PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft)
Tested v.1.3.4
CAPABILITY IMAP4rev1 STARTTLS AUTH=LOGIN AUTH=PLAIN IDLE LITERAL+ NAMESPACE CHILDREN PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)
IMAP server does not support server side sorting and threading. Plain text logins are disabled by default. Due to available storage backend configuration options it is impossible to create single preset, which covers all setups.
Site URL: http://www.bincimap.org
Part of GNU mail utility collection
Tested v.0.6.1 (Debian Sarge) and v.0.6.90
CAPABILITY IMAP4rev1 NAMESPACE IDLE X-VERSION AUTH=GSSAPI AUTH=ANONYMOUS AUTH=EXTERNAL AUTH=PLAIN AUTH=LOGIN AUTH=SECURID AUTH=DIGEST-MD5 AUTH=CRAM-MD5 PERMANENTFLAGS (\Answered \Deleted \Seen) NAMESPACE (("" "/")) NIL NIL
Can use UW preset. Server side sorting is not supported. IMAP folders can store messages or subfolders. Can't create second level (mail/Folder/Subfolder/) subfolders (bug, fixed in later versions). Invalid unseen message count, when \Seen flag is toggled manually (bug, fixed in later versions). Folder listing with non-default sort order issues are fixed in cvs version.
Site URL: http://savannah.gnu.org/projects/mailutils
IMAP service that is part of DBMail email suite. DBMail provides local delivery agent, pop3 and imap services. User information and emails are stored in database.
Tested v.2.0.7
Information provided by Muhd Zamri
CAPABILITY IMAP4 IMAP4rev1 AUTH=LOGIN ACL NAMESPACE SORT PERMANENTFLAGS (\Seen \Answered \Deleted \Flagged \Draft \Recent) NAMESPACE (("" "/")) (("#Users" "/")) (("#Public" "/"))
IMAP server provides partial support of IMAP QUOTA extension. SETQUOTA command is not supported and QUOTA extension is not advertised in CAPABILITY. SORT extension is broken in tested version.
> A05 UID SORT (FROM) US-ASCII ALL A05 BAD syntax error in sort keys > A06 UID SORT (FROM) ISO-8859-1 ALL A06 BAD UID command received in invalid state
Site URL: http://www.dbmail.org
HTTP and email server written in Java. User information is stored in database. SELECT response is in rfc 2060 format.
Tested v.1.4.1.58b
CAPABILITY IMAP4rev1 PERMANENTFLAGS - missing FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
Site URL: http://www.bejy.net
IMAP server included in Citadel groupware
CAPABILITY IMAP4REV1 NAMESPACE ID AUTH=PLAIN AUTH=LOGIN UIDPLUS STARTTLS ACL METADATA PERMANENTFLAGS (\Deleted \Seen \Answered) NAMESPACE (("INBOX/" "/")) NIL (("Main Floor/" "/")) A03 LIST "*" "*" * LIST (\NoSelect \HasChildren) "/" "Main Floor" * LIST () "/" "INBOX/Calendar" * LIST () "/" "INBOX/Contacts" * LIST () "/" "INBOX" * LIST () "/" "INBOX/Notes" * LIST () "/" "INBOX/Sent Items" * LIST () "/" "INBOX/Tasks" * LIST () "/" "INBOX/Trash" * LIST () "/" "Main Floor/Aide" * LIST () "/" "Main Floor/Global Address Book" * LIST () "/" "Main Floor/Lobby" * LIST () "/" "Main Floor/Trashcan"
Notes are stored as plain text rfc822 emails. Content-Type headers are not set. Contacts are stored with text/v-card MIME type. Calendar and Tasks are stored with text/calendar MIME type.
Site URL: http://www.citadel.org
IMAP service included in Zimbra groupware suite.
Tested v.4.5.7 Open Source Edition
CAPABILITY IMAP4rev1 BINARY CATENATE CHILDREN ESEARCH ID IDLE LITERAL+ LOGIN-REFERRALS NAMESPACE QUOTA SASL-IR UIDPLUS UNSELECT WITHIN X-DRAFT-I04-SEARCHRES FLAGS (\Answered \Deleted \Draft \Flagged \Seen $Forwarded $MDNSent Forwarded $Junk $NotJunk Junk JunkRecorded NonJunk NotJunk) PERMANENTFLAGS (\Answered \Deleted \Draft \Flagged \Seen $Forwarded $MDNSent Forwarded \*) NAMESPACE (("" "/")) NIL NIL
Possible issues with non-standard order of FLAGS and BODYSTRUCTURE in IMAP FETCH response. Folder names case insensitive. Plain text logins are disabled. StartTLS extension and IMAPS are enabled. Folders can store messages and subfolders.
Site URL: http://www.zimbra.org
IMAP service included in proprietary Exchange Server, Microsoft messaging and collaboration server.
Tested 2007 (8.0.685.0) version
(before STARTTLS) CAPABILITY IMAP4 IMAP4rev1 LOGINDISABLED STARTTLS IDLE NAMESPACE LITERAL+ CAPABILITY IMAP4 IMAP4rev1 AUTH=NTLM AUTH=GSSAPI IDLE NAMESPACE LITERAL+ PERMANENTFLAGS (\Seen \Answered \Flagged \Deleted \Draft $MDNSent) NAMESPACE (("" "/")) NIL NIL
Server does not support server side sorting. Folder names are case insensitive. Names of special folders depend on selected translation (in OWA). Folders can store messages and subfolders. Some folders are used to store calendaring information, but it is not available to IMAP clients. Before Win2k login names are in 'domain/user' form. In Win2k and later you can also use 'user@domain'.
PMDF is a proprietary, high performance, standards-based Internet messaging product suite for Windows, OpenVMS, Tru64 UNIX, and Solaris.
Tested IMAP4rev1 Server PMDF V6.2-X29.1
CAPABILITY IMAP4 IMAP4REV1 NAMESPACE X-NON-HIERARCHICAL-RENAME AUTH=LOGIN AUTH=PLAIN PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen) NAMESPACE (("" "/")) NIL NIL
Supports TLS and SSL encryption, SASL CRAM-MD5 and DIGEST-MD5 authentication. Includes SIEVE (rfc3028) support.
Site URL: http://www.process.com/tcpip/pmdf.html
Proprietary IMAP service included in Merak Email Server Suite.
Tested 8.3.0.r and 8.3.1 beta.
CAPABILITY IMAP4rev1 AUTH=CRAM-MD5 AUTH=DIGEST-MD5 AUTH=LOGIN AUTH=PLAIN SORT THREAD-ORDEREDSUBJECT UIDPLUS QUOTA ACL NAMESPACE STARTTLS PERMANENTFLAGS (\Seen \Answered \Flagged \Draft \Deleted) NAMESPACE (("" "/")) NIL NIL
INBOX folder is lowercased. IMAP folder names are case insensitive. Possible issue with IMAP SORT extension.
Request: A005 UID SORT (DATE) ISO-8859-1 ALL Response: * UID SORT 1 2 UID SORT Completed
NaSMail expects '* SORT 1 2'
Site URL: http://www.icewarp.com
Commercial email server for Windows.
Tested 6.1.22.1 version.
CAPABILITY IMAP4rev1 ACL NAMESPACE UIDPLUS AUTH=NTLM AUTH=SCRAM-MD5 AUTH=CRAM-MD5 PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*) NAMESPACE (("" "/")) (("#shared/" "/")) NIL
FETCH response to UID STORE command violates RFC 3501.
Site URL: http://www.rockliffe.com/
IMAP service included in proprietary Softalk mail server.
Service can't be used in NaSMail due to broken IMAP4rev1 support
Tested 8.5 (build 411), 8.5.1 (build 431)
CAPABILITY IMAP4rev1 no PERMANENTFLAGS FLAGS (\Deleted \Seen \Answered \Recent \Draft \Flagged) namespace extension is not supported. Mailbox layout matches NAMESPACE (("" "/")) NIL NIL
Broken UID SEARCH, SEARCH and COPY support. FETCH BODY does not set \Seen flag. Folders are case insensitive. Folders can store messages and subfolders. User accounts have default "Sent Items", "Drafts" and "Deleted Items" folders.
Site URL: http://www.softalkltd.com/products/workgroupmail/
IMAP service included in multiplatform proprietary SurgeMail Mail Server Software Suite.
Tested 3.9c version.
CAPABILITY IMAP4 IMAP4REV1 NAMESPACE QUOTA UIDPLUS IDLE SORT SURGEMAIL PERMANENTFLAGS (\Answered \Flagged \Deleted \Draft \Seen)] Limited NAMESPACE (("" "/")) NIL NIL
Fails to provide correct BODYSTRUCTURE response for some MIME formated emails.
Site URL: http://www.netwinsite.com/surgemail/
Unidentified IMAP server or IMAP proxy used by 1&1 Internet Inc. (http://www.1and1.com and http://www.1und1.de)
CAPABILITY CHILDREN ID IDLE IMAP4 IMAP4rev1 LITERAL+ LOGIN-REFERRALS MAILBOX-REFERRALS NAMESPACE UIDPLUS QUOTA STARTTLS AUTH=PLAIN AUTH=LOGIN
http://thread.gmane.org/gmane.mail.squirrelmail.user/26433
Gmail IMAP service (tested on 2008-05-02).
* OK Gimap ready for requests from ip.xx.xx.xx somestring CAPABILITY (before auth) IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA XLIST CHILDREN XYZZY (after auth) IMAP4rev1 UNSELECT LITERAL+ IDLE NAMESPACE QUOTA ID XLIST CHILDREN NAMESPACE (("" "/")) NIL NIL PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen \*)
Uses IMAPS port. All standard Gmail labels are under '[Gmail]/'. Folder names depend on selected Gmail interface language. Labels are listed as top level folders unless they have IMAP delimiter in name.
* LIST (\HasNoChildren) "/" "INBOX" * LIST (\HasNoChildren) "/" "Sent" * LIST (\HasNoChildren) "/" "Trash" * LIST (\Noselect \HasChildren) "/" "[Gmail]" * LIST (\HasNoChildren) "/" "[Gmail]/All Mail" * LIST (\HasNoChildren) "/" "[Gmail]/Drafts" * LIST (\HasNoChildren) "/" "[Gmail]/Sent Mail" * LIST (\HasNoChildren) "/" "[Gmail]/Spam" * LIST (\HasNoChildren) "/" "[Gmail]/Starred" * LIST (\HasNoChildren) "/" "[Gmail]/Trash" * LIST (\Noselect \HasChildren) "/" "test" * LIST (\HasNoChildren) "/" "test/test"
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