Unofficial IMAP Protocol Wiki
Specifications
[:RfcList:List of published IMAP-related RFCs]
[:DraftList:List of IMAP-related drafts]
[http://www.ietf.org/html.charters/imapext-charter.html IETF imapext charter]
[http://www.ietf.org/html.charters/lemonade-charter.html IETF LEMONADE charter]
Client Issues
[http://dovecot.org/client-commandments.txt Mark Crispin's Ten Commandments of How to Write an IMAP client]
[http://dovecot.org/imap-client-coding-howto.html IMAP Client Coding Howto]
Server Issues
[:MultiAccessPractices:Multi-accessed mailbox practices]