I was curious whether it could transparently replace
text/plain in email communication, but apparently several clients do not fall back gracefully to
text/plain although they ought to.
I also tried to find email clients that not only support entering markdown (and convert to HTML), but also announce it somehow in the
Content-Type header for the plain text part. The few I found use
text/plain; markup=markdown instead.
Should users petition app makers to support either the subtype or the parameter?