An updated internet-draft is available from the IETF. This draft is a work item of the Internet Message Access Protocol Extension Working Group of the IETF.
Abstract: «The ACL (Access Control List) extension (RFC2086) of the Internet Message Access Protocol (IMAP4rev1) permits mailbox access control lists to be manipulated through the IMAP protocol. »
«This document is a revision of the RFC2086. It defines several new access control rights and clarifies which rights are required for different IMAP commands.»