22.214.171.124.4 MetaTagIdsetRead Meta-Property
Property ID: 0x402D
The MetaTagIdsetRead property contains a serialization of REPLID-based IDSET structures. The IDSETs contain IDs of messages that were marked as read (as specified by the PidTagMessageFlags property in [MS-OXCMSG] section 126.96.36.199) since the last synchronization, as identified by the initial ICS state. For more details about how an IDSET is serialized, see section 188.8.131.52.