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2.2.1.3.5 MetaTagIdsetUnread Meta-Property

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Property ID: 0x402E

Data type: PtypBinary, 0x0102 ([MS-OXCDATA] section 2.11.1)

The MetaTagIdsetUnread property contains a serialization of REPLID-based IDSET structures. The IDSETs contain IDs of messages that were marked as unread (as specified by the PidTagMessageFlags property in [MS-OXCMSG] section 2.2.1.6) since the last synchronization, as identified by the initial ICS state. For more details about how an IDSET is serialized, see section 3.1.5.4.