BYOD devices and Workspace One. We want to give users access to our Exchange via the Windows Native Mail client. But we want to do it via a tunnel (or SEG). How we can do it? We have learned how to control Windows 10 installed apps and how to create rules for these apps to use a tunnel, but we don't know any FREE mail app client for Windows desktop which could be connected to Exchange (not via IMAP\SMTP). Maybe you know the best practice for this case or know any good apps?