Why do you not use something like hotmail, or other internet mail . I use Hotmail and it downloads automatically to my iPad and also leaves it on the Internet account so that I can just sign in on laptop or desktop and read again or work on with the mail. I say hotmail but as they say on TV there are many other mail company's . Unless I have misinterpreted your thread.
Surface Pro 5 News - release date, UK price, features, specs