Newbie imap lib question

[jrpfinch]

All I have to go on is the RFC2060 standard which says:

7.3.1.  EXISTS Response

   Contents:   none

      The EXISTS response reports the number of messages in the
mailbox.
      This response occurs as a result of a SELECT or EXAMINE command,
      and if the size of the mailbox changes (e.g. new mail).

      The update from the EXISTS response MUST be recorded by the
      client.

   Example:    S: * 23 EXISTS