Send personalised marketing emails to subscribers with an unsubscribe link.
Install
npx skills add caffeinelabs/skills --skill extension-email-marketingnpx skills add caffeinelabs/skills --skill extension-email-marketing -a claude-code -gnpx skills add caffeinelabs/skills --skill extension-email-marketing -a codex -ggemini skills install https://github.com/caffeinelabs/skills.git --path skills/extension-email-marketinggh skill install caffeinelabs/skills extension-email-marketinggit clone --depth 1 https://github.com/caffeinelabs/skills /tmp/caffeinelabs__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/caffeinelabs__skills/skills/extension-email-marketing ~/.claude/skills/extension-email-marketing # Claude Code
cp -R /tmp/caffeinelabs__skills/skills/extension-email-marketing ~/.agents/skills/extension-email-marketing # Codex, Cursor, Gemini CLI, Copilot, OpenCode