MAIL$_MAILFILE_DATA_RECLAIM
    When you specify MAIL$_MAILFILE_DATA_RECLAIM, MAIL$MAILFILE_
    PURGE_WASTE returns the number of data buckets reclaimed during
    the reclaim operation as a longword value.
 MAIL$_MAILFILE_DATA_SCAN
    When you specify MAIL$_MAILFILE_DATA_SCAN, MAIL$MAILFILE_PURGE_
    WASTE returns the number of data buckets scanned during the
    reclaim operation as a longword value.
 MAIL$_MAILFILE_INDEX_RECLAIM
    When you specify MAIL$_MAILFILE_INDEX_RECLAIM, the Mail utility
    returns the number of index buckets reclaimed during a reclaim
    operation as a longword value.
 MAIL$_MAILFILE_DELETED_BYTES
    When you specify MAIL$_MAILFILE_DELETED_BYTES, MAIL$MAILFILE_
    PURGE_WASTE returns the number of bytes deleted from the mail
    file as a longword value.
 MAIL$_MAILFILE_MESSAGES_DELETED
    When you specify MAIL$_MAILFILE_MESSAGES_DELETED, MAIL$MAILFILE_
    PURGE_WASTE returns the number of deleted messages as a longword
    value.
 MAIL$_MAILFILE_TOTAL_RECLAIM
    When you specify MAIL$_MAILFILE_TOTAL_RECLAIM, MAIL$MAILFILE_
    PURGE_WASTE returns the number of bytes reclaimed due to a
    reclaim operation as a longword value.