ContactItem.HomeAddressPostOfficeBox Property (Outlook)
Published: July 16, 2012
Returns or sets a String the post office box number portion of the home address for the contact. Read/write.
This property is parsed from the HomeAddress property, but may be changed or entered independently should it be parsed incorrectly. Note that any such changes or entries to this property will be overwritten by any subsequent changes or entries to HomeAddress.