## EmsAbSupportingStackO {#emsabsupportingstacko}

Microsoft� Exchange defines this property that is used by the Microsoft Exchange Server and the Microsoft Exchange Client. Canonical name: Alternate names: PR_EMS_AB_SUPPORTING_STACK_O

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

```cpp
EmsAbSupportingStackO()
```