## AttachPayloadProviderGuidString {#attachpayloadproviderguidstring}

Contains the GUID of the software component that can display the contents of the message. Area: Outlook Application Canonical name: PidTagAttachPayloadProviderGuidString Alternate names: PR_ATTACH_PAYLOAD_PROV_GUID_STR, PR_ATTACH_PAYLOAD_PROV_GUID_STR_A, PR_ATTACH_PAYLOAD_PROV_GUID_STR_W

**Returns:** System::SharedPtr < PidTagPropertyDescriptor > Aspose::Email::Mapi::

```cpp
AttachPayloadProviderGuidString()
```