The PR_IPM_SUBTREE_SEARCH_KEY property was originally meant to contain the search key of the interpersonal message (IPM) root folder.
| Header file: | MAPITAGS.H |
| Identifier: | 0x3410 |
| Property type: | PT_BINARY |
| Property tag: | 0x34100102 |
Do not use this property. It is not supported in MAPI 1.0.