At least not that long ago the outlook app used to proxy access as it was purchased from someone else rather than being a Microsoft product - it didn't have an

At least not that long ago the outlook app used to proxy access as it was purchased from someone else rather than being a Microsoft product - it didn't have an imap client but asked a remote machine (in the USA) to connect on your behalf, don't know if this is still the case but given neglect for mail clients I wouldn't be surprised