2.8.3 RecipientRow Structure
A RecipientRow structure represents a single recipient (1) belonging to a Message object. It is rather complex but can be considered as a sequence of three different parts:
A flags field indicating which of several standard properties are present
Standard property values
Arbitrary property values outside the standard set
This structure is used by several ROPs, including:
RopReadRecipients ([MS-OXCROPS] section 2.2.6.6)
RopOpenMessage ([MS-OXCROPS] section 2.2.6.1)
RopOpenEmbeddedMessage ([MS-OXCROPS] section 2.2.6.16)
First, specify the RecipientFlags field.