Hi Nigel,

I tried using your MAPI class in an application I´m developing for a customer. With my PC it works fine, but when I run the app at my customer´s site, I get the following error message:

"OLE error code 0x80040112. Appropriate license for this class not found"

The only difference between both systems is that I have Outlook Express as the MAPI client and my customer has Exchange 4.0

What license am I missing ?