Usually Mail clients send mails as multipart/alternative with both a text/html and text/plain. It makes sense to keep the entered markdown as the text/plain pa

Usually Mail clients send mails as multipart/alternative with both a text/html and text/plain. It makes sense to keep the entered markdown as the text/plain part. But if this looks ugly, then the plain text view won't be as pleasant. PS.: I hate all companies that think their newsletter only needs text/html, and put a "Please read me with an HTML-compatible mail client" as text/plain.