The PR_ATTACH_CONTENT_ID property contains the content identification header of a MIME message attachment.
| Header file: | MAPITAGS.H |
| May be exposed by: | Attachment subobjects |
| Identifier: | 0x3712 |
| Property type: | PT_TSTRING |
| Property tag: | 0x3712001E (0x3712001F for Unicode) |
The PR_ATTACH_CONTENT_ID property is used for MHTML support. It represents the content identification header for the appropriate MIME body part.