Thanks,

2. Click IMessage button on the OutlookSpy toolbar, then click "Add
Property" button.

But where in appeared dialog form i set the name for property??? and
ID ?? how should i get it or calculate it.


Dmitry maybe there is workaround concerning the folder's proeperty??
All i need to save is one property
and every time create RDOFolder and check for hidden item and get the
property from this item it will strike the performance.
I should check for this property every time for every mail that i get.


Thanks in advance.