| Object | Type |
|
| Attachment | Can be one of the following OlAttachmentType constants: olByReference, olByValue, olEmbeddedItem, or olOLE. Read-only Long. |
| JournalItem | A free-form string field, usually containing the display name of the journalizing application (for example, "MSWord"). Read/write String. |
| NameSpace | The only supported type is "MAPI." Read-only String. |
| Recipient (of JournalItem) | The OlJournalRecipientType constant: olAssociatedContact. Read/write Long. |
| Recipient (of MailItem) | Can be one of the following OlMailRecipientType constants: olBCC, olCC, olOriginator, or olTo. Read/write Long. |
| Recipient (of MeetingRequestItem) | Can be one of the following OlMeetingRecipientType constants: olOptional, olOrganizer, olRequired, or olResource. Read/write Long. |
| Recipient (of TaskItem) | Can be either of the following OlTaskRecipientType constants: olFinalStatus, or olUpdate. Read/write Long. |
| UserProperty | Can be one of the following OlUserPropertyType constants: olCombination, olCurrency, olDateTime, olDuration, olFormula, olKeywords, olNumber, olPercent, olText, or olYesNo. Read-only Long. |