2.1.3.2.25 Flag Request
To generate an X-Message-Flag header, clients set the value of the PidLidFlagRequest property ([MS-OXCSPAM] section 2.2.1.3).
MIME writers copy the value of the PidLidFlagRequest property to the X-Message-Flag header.
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To generate an X-Message-Flag header, clients set the value of the PidLidFlagRequest property ([MS-OXCSPAM] section 2.2.1.3).
MIME writers copy the value of the PidLidFlagRequest property to the X-Message-Flag header.