Open attachment that contains forwarded email (MIME type message/rfc822)

When I forward an email with Mutt from my laptop, Mutt adds the forwarded email as an attachment with MIME type "message/rfc822". Unfortunately, Android's stock email client "com.android.email" version 8.1.0 displays the received email like this:  Two things are wrong with that: * It doesn't show the forwarded email's content. * It doesn't show the content of the non-forwarded email, the body of the email I wrote in Mutt. The email displays properly when using K-9 Mail. Is there a way to make the email app show the email and its attachment? --- I'm on a Samsung Galaxy J5 running LineageOS.