Go ahead and write Markdown. Every one of your recipients will understand, as Markdown is essentially taken from how people write plain text email (> for block

Go ahead and write Markdown. Every one of your recipients will understand, as Markdown is essentially taken from how people write plain text email (> for block quotes, * for bulleted lists, _ for emphasis etc.). I've seen that some graphical clients seem to interpret these characters. It's common for block quotes to be colorized and foldable, for example. (But what do I know? I'm an old fart in email matters.)