IMAP4 rev1 - STATUS-COUNTERS Extension
Comverse Technology
MessagingDirect
The STATUS-COUNTERS extends IMAP4rev1’s STATUS command. This extension adds the following functionality: Enable MUA to get mailbox counters per groups of messages, grouped according to the value of Message-Context header field. For example, the MUA can find out that the Inbox contains 5 unseen fax messages.