LazyMAPI

MAPI Properties

MAPI Property: PR_ORGANIZATIONAL_ID_NUMBER, PR_ORGANIZATIONAL_ID_NUMBER_A, PR_ORGANIZATIONAL_ID_NUMBER_W
Description: Contains an organizational ID number for the contact, such as an employee ID number.
Property ID: $3A10
Property type: PT_UNICODE, PT_STRING8
Area: Address

Remarks:
These are optional properties. Their use is determined by the messaging user or organization.