I'm working in Italy at the end of next month and purchased some air tickets via lastminute.com. When the confirmation came through, I was given the option of adding the departure and arrival times into Microsoft Outlook. Neat idea. But the originators of the application are milking it for all it's worth. When I look at the diary entry it tells me that I am flying to Milan "thanks to lastminute.com".
I wonder if you can set up those meeting request emails in a similar way? "Congratulations. You are attending a meeting at 10.30 am to collect your P45. Brought to you by the Head of HR..."