...and that can be fixed with a backend change to decent groupware servers running open protocols.
Oh, is that it? Well then, I'll just email the admin of my university and insist that he/she immediately take down that exhange server and replace it. Same goes for the admin at my enormous company, whom I'm sure will be more than happy to make a simple backend change to a decent groupware server from MS exchange, nevermind all the management being dependent on MS products.
the email clients should conform to the backend that is being used in reality, not the other way around.