Google Chrome, Firefox, and Thunderbird extension that lets you write email in Markdown and render it before sending. - Markdown Cheatsheet · adam-p/markdown-here Wiki...Alternatively, for H1 and H2, an underline-ish style: Alt-H1 ====== Alt-H2...Alternatively, for H1 and H2, an underline-ish style: Alt-H1 Alt-H2 Emphasis...