Email HTML sucks. Outlook renders with Word. Gmail strips your styles. You end up writing nested tables and inline CSS like it's 2003. Email.md fixes this. Write Markdown, get responsive HTML that works everywhere. Themes, buttons, callouts, headers/footers - all from simple syntax. Outputs both HTML and plain text in one call. Works great with AI since it's just Markdown. Open source, MIT licensed. `npm install emailmd`