MAIL$_MESSAGE_BINARY_DATE
    When you specify MAIL$_MESSAGE_BINARY_DATE, MAIL$MESSAGE_INFO
    returns the message arrival date as a quadword binary value.
 MAIL$_MESSAGE_CC
    When you specify MAIL$_MESSAGE_CC, MAIL$MESSAGE_INFO returns the
    CC: field of the current message. The buffer address field of
    the item descriptor points to a buffer that receives a character
    string 0 to 998 characters long.
    Specify a value from 0 to 998 in the buffer length field of the
    item descriptor.
 MAIL$_MESSAGE_CURRENT_ID
    When you specify MAIL$_MESSAGE_ID, MAIL$MESSAGE_INFO returns
    the message identification number of the current message. The
    buffer address field of the item descriptor points to a longword
    that receives the message identification number of the current
    message.
 MAIL$_MESSAGE_DATE
    When you specify MAIL$_MESSAGE_DATE, MAIL$MESSAGE_INFO returns
    the message creation date string. The buffer address field of
    the item descriptor points to a buffer that receives a character
    string 0 to 255 characters long.
    Specify a value from 0 to 255 in the buffer length field of the
    item descriptor.
 MAIL$_MESSAGE_EXTID
    When you specify MAIL$_MESSAGE_EXTID, MAIL$MESSAGE_INFO returns
    the external identification number of the current message as a
    string. The buffer address field of the item descriptor points
    to a buffer that receives a character string 0 to 255 characters
    long.
    Specify a value from 0 to 255 in the buffer length field of the
    item descriptor.
 MAIL$_MESSAGE_FROM
    When you specify MAIL$_MESSAGE_FROM, MAIL$MESSAGE_INFO returns
    the From: field of the specified message. The buffer address
    field of the item descriptor points to a buffer that receives a
    character string 0 to 998 characters long.
    Specify a value from 0 to 998 in the buffer length field of the
    item descriptor.
 MAIL$_MESSAGE_REPLY_PATH
    When you specify MAIL$_MESSAGE_REPLY_PATH, MAIL$MESSAGE_INFO
    returns the reply path of the specified message. The buffer
    address field of the item descriptor points to a buffer that
    receives a character string 0 to 998 characters long.
    Specify a value from 0 to 998 in the buffer length field of the
    item descriptor.
 MAIL$_MESSAGE_RETURN_FLAGS
    When you specify MAIL$_MESSAGE_RETURN_FLAGS, MAIL$MESSAGE_INFO
    returns the Mail system flag values for the current message as a
    2-byte bit mask value.
 MAIL$_MESSAGE_SENDER
    When you specify MAIL$_MESSAGE_SENDER, MAIL$MESSAGE_INFO returns
    the name of the sender of the current message. The buffer address
    field of the item descriptor points to a buffer that receives a
    character string 0 to 998 characters long.
    Specify a value from 0 to 998 in the buffer length field of the
    item descriptor.
 MAIL$_MESSAGE_SIZE
    When you specify MAIL$_MESSAGE_SIZE, MAIL$MESSAGE_INFO returns
    the size of the current message in records as a longword value.
 MAIL$_MESSAGE_SUBJECT
    When you specify MAIL$_MESSAGE_SUBJECT, MAIL$MESSAGE_INFO returns
    the Subject: field of the specified message. The buffer address
    field of the item descriptor points to a buffer that receives a
    character string 0 to 998 characters long.
    Specify a value from 0 to 998 in the buffer length field of the
    item descriptor.
 MAIL$_MESSAGE_TO
    When you specify MAIL$_MESSAGE_TO, MAIL$MESSAGE_INFO returns the
    To: field of the specified message. The buffer address field of
    the item descriptor points to a buffer that receives a character
    string 0 to 998 characters long.
    Specify a value from 0 to 998 in the buffer length field of the
    item descriptor.