I've gone from "will never quite trust Moo U email again" to "will never use Moo U email for anything important again if I can help it." Though I'm not sure what good it will do, because these people are all Moo U faculty and staff, so they'll be using their university accounts to communicate with me anyway.
ETA: I've just spoken to the university's IT people, whose final, ever-so-helpful answer was "Our email is routed through Gmail and is basically Gmail dressed up in Moo U colors, so you can...uh, maybe take it up with