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The IMAP specification has been criticised for being insufficiently strict and allowing behaviours that effectively negate its usefulness.
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IMAP and has
However, push IMAP has not been generally accepted and current IETF work has addressed the problem in other ways ( see the Lemonade Profile for more information ).
The IMAP protocol has features that allow uploading of mail messages and there are implementations that can be configured to also send messages like an MTA, which combine sending a copy and storing a copy in the Sent folder in one upload operation.
It has send and receive fax facilities ( without scanner ) and multi-account POP3 / IMAP email client.
When downloading mail through POP or IMAP access, Gmail fails to deliver messages that users have sent to themselves if the client has a copy of it already.
It has spam filtering ( both automated and Bayesian ), supports POP3 and IMAP, newsgroups as well as Atom and RSS feeds.
It can be installed on almost all web servers as long as PHP is present and the web server has access to an IMAP and SMTP server.
The SquirrelMail IMAP proxy server product was created in 2002 by Dave McMurtrie while at the University of Pittsburgh ( where it was named " up-imapproxy ", although it has become more commonly known as " imapproxy ") and adopted by the SquirrelMail team in 2010.
* IMAP IDLE, a IMAP feature where an email server actively notifies a client application when new mail has arrived
Balsa has a graphical front end, support for MIME attachments coming and going, directly supports POP3 and IMAP protocols.
The most recent version of UW IMAP on UW's FTP server is imap-2007f, which has some bug fixes from the previous version.
IMAP and for
Internet message access protocol ( IMAP ) is one of the two most prevalent Internet standard protocols for e-mail retrieval, the other being the Post Office Protocol ( POP ).
Some clients and servers preferentially use vendor-specific, proprietary protocols, but most support the Internet standard protocols, SMTP for sending e-mail and POP and IMAP for retrieving e-mail, allowing interoperability with other servers and clients.
IMAP was designed by Mark Crispin in 1986 as a remote mailbox protocol, in contrast to the widely used POP, a protocol for retrieving the contents of a mailbox.
An IMAP Working Group formed in the IETF in the early 1990s took over responsibility for the IMAP2bis design.
In contrast, the IMAP protocol specifically allows simultaneous access by multiple clients and provides mechanisms for clients to detect changes made to the mailbox by other, concurrently connected, clients.
Unlike some proprietary protocols which combine sending and retrieval operations, sending a message and saving a copy in a server-side folder with a base-level IMAP client requires transmitting the message content twice, once to SMTP for delivery and a second time to IMAP to store in a sent mail folder.
This is remedied by a set of extensions defined by the IETF LEMONADE Working Group for mobile devices: URLAUTH ( RFC 4467 ) and CATENATE ( RFC 4469 ) in IMAP and BURL ( RFC 4468 ) in SMTP-SUBMISSION.
The most widely implemented open protocols for the MUA are the Post Office Protocol ( POP3 ) and the Internet Message Access Protocol ( IMAP ), but many proprietary systems exist ( Exchange, Lotus Domino / Notes ) for retrieving messages.
In contrast, an MUA using IMAP displays messages directly from the server, although a download option for archive purposes is usually also available.
POP and IMAP ( Internet Message Access Protocol ) are the two most prevalent Internet standard protocols for e-mail retrieval.
This " POP4 " proposal added basic folder management, multipart message support, as well as message flag management, allowing for a light protocol which supports some popular IMAP features which POP3 currently lacks.
Fetchmail is an open source software utility for POSIX-compliant operating systems which is used to retrieve e-mail from a remote POP3, IMAP, ETRN or ODMR mail server to the user's local system.
IMAP features an idle extension for real time updates, providing faster notification than polling, where long lasting connections are feasible.
* Courier Mail Server SMTP and IMAP server, for which the Maildir ++ format was invented
* Application Configuration Access Protocol, a protocol which enhances IMAP by allowing the user to set up data for universal access
A reader server is one that makes the articles available in the hierarchical disk directory format originated by B News 2. 10, or offers the NNTP or IMAP commands, for use by newsreaders.
Bernstein proposed Internet Mail 2000, an alternative system for electronic mail, intended to replace Simple Mail Transfer Protocol ( SMTP ), Post Office Protocol ( POP3 ) and Internet Message Access Protocol ( IMAP ).
* MIX ( Email ), a high performance email storage system for use with IMAP
Mail 5 features a redesigned iPad-like fullscreen user interface, a changed message search interface, support for Microsoft Exchange Server 2010 and IMAP Yahoo!
Support for Exchange push email was dropped ; IMAP is now required for push email.
IMAP and its
Although some of its commands and responses were similar to IMAP2, the interim protocol lacked command / response tagging and thus its syntax was incompatible with all other versions of IMAP.
The IMAP Working Group used RFC1176 ( IMAP2 ) rather than RFC1203 ( IMAP3 ) as its starting point.
It owes its creation to the CMU Cyrus Project, creators of Cyrus IMAP server.
It exposes a SOAP application programming interface to all its functionality and also is an IMAP and POP3 server.
IMAP and .
The Internet Message Access Protocol ( commonly known as IMAP ) is an Application Layer Internet protocol that allows an e-mail client to access e-mail on a remote mail server.
The current version, IMAP version 4 revision 1 ( IMAP4rev1 ), is defined by RFC 3501.
An IMAP server typically listens on well-known port 143.
IMAP over SSL ( IMAPS ) is assigned well-known port number 993.
IMAP supports both on-line and off-line modes of operation.
E-mail clients using IMAP generally leave messages on the server until the user explicitly deletes them.
This and other characteristics of IMAP operation allow multiple clients to manage the same mailbox.
Most e-mail clients support IMAP in addition to POP to retrieve messages ; however, fewer e-mail services support IMAP.
IMAP offers access to the mail storage.
For example, Microsoft's Outlook client uses a proprietary protocol to communicate with a Microsoft Exchange Server server as does IBM's Notes client when communicating with a Domino server, but all of these products also support POP, IMAP, and outgoing SMTP.
IMAP was previously known as Internet Mail Access Protocol, Interactive Mail Access Protocol ( RFC 1064 ), and Interim Mail Access Protocol.
IMAP3 is an extinct and extremely rare variant of IMAP.
An internet draft of IMAP2bis was published by the IETF IMAP Working Group in October 1993.
The IMAP WG decided to rename IMAP2bis to IMAP4 to avoid confusion with a competing IMAP3 proposal from another group that never got off the ground.
Keywords, which are not supported by all IMAP servers, allow messages to be given one or more tags whose meaning is up to the client.
While IMAP remedies many of the shortcomings of POP, this inherently introduces additional complexity.
IMAP4 clients need to maintain a TCP / IP connection to the IMAP server in order to be notified of the arrival of new mail.
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