Unable to access improfileUniqueMessageId

Sriharsha

Hi,

I am using the COM programming model, when i tried to access an email's UniqueMessageid, the code was returning null.
The code is something like this:

doc.GetAttributeByID(imProfileAttributeID.imProfileMessageUniqueID).ToString().

Can anyone please tell me how to access the message id of an email usng the worksite programming model?

Thanks in advance.