Use when the user asks to "build the email HTML", "make this email responsive", "fix dark-mode rendering", or "QA the email across clients"; produces the coded HTML build — a responsive table layout, dark-mode + accessibility pass, a client-render matrix, image-block fallbacks, and a plain-text parity check.
Install
npx skills add aaron-he-zhu/aaron-marketing-skills --skill email-render-buildernpx skills add aaron-he-zhu/aaron-marketing-skills --skill email-render-builder -a claude-code -gnpx skills add aaron-he-zhu/aaron-marketing-skills --skill email-render-builder -a codex -ggemini skills install https://github.com/aaron-he-zhu/aaron-marketing-skills.git --path email/engage/email-render-buildergh skill install aaron-he-zhu/aaron-marketing-skills email-render-buildergit clone --depth 1 https://github.com/aaron-he-zhu/aaron-marketing-skills /tmp/aaron-he-zhu__aaron-marketing-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/aaron-he-zhu__aaron-marketing-skills/email/engage/email-render-builder ~/.claude/skills/email-render-builder # Claude Code
cp -R /tmp/aaron-he-zhu__aaron-marketing-skills/email/engage/email-render-builder ~/.agents/skills/email-render-builder # Codex, Cursor, Gemini CLI, Copilot, OpenCode