The ReplyTo property specifies the messaging address or addresses to which replies are to be sent.
Property ReplyTo as String HRESULT get_ReplyTo(BSTR* pVal); HRESULT put_ReplyTo(BSTR Val);
This property is also available as the urn:schemas:mailheader:reply-to and urn:schemas:httpmail:reply-to fields.
If the ReplyTo property is not set, the Reply and ReplyAll methods address the reply to the messaging address in the From property.
The default value of the ReplyTo property is an empty string.