Outlook is one of those anticompetitive Trojan horses Microsoft has gotten away with, and I still don't understand why. For example, a few years ago, they had

Outlook is one of those anticompetitive Trojan horses Microsoft has gotten away with, and I still don't understand why. For example, a few years ago, they had this functionality in Exchange that would only work if the receiving client was Outlook. On anything else, you would get a partial message plus some non standard binary attachment. And good luck if you want to export all your emails from Outlook to another client.