I have found out that myAppointment.RTFBody appeared with Outlook 2010.
The problem is that I don't know how to use it.
I copied an example from http://msdn.microsoft.com/en-us/library/aa287595(v=vs.71).aspx
myAppointment.RTFBody = @"{\rtf1\ansi This is in \b bold\b0.}";
unfortunately whatever I put after myAppointment.RTFBody, I receive an error:
System.Runtime.InteropServices.COMException (0xB9B0FFFF): The operation failed.
Can yo please help me with creating proper appointment with BOLD text in it?
THX in advance.