IMSVA provides web-based EUQ to
               improve spam management. The web-based EUQ service allows end users to manage the
               spam
               quarantine of their personal accounts and of distribution lists that they belong to.
               Messages that are determined to be spam are quarantined. These messages are indexed
               into
               a database by the EUQ agent and are then available for end users to review, delete,
               or
               approve for delivery.
 
            You can specify the period to keep messages in the quarantine. IMSVA automatically deletes messages that are not
               released from quarantine. Deleted messages cannot be recovered.