Support for sending service/transactional emails. Don't use this for sending marketing emails or verification emails.
Install
npx skills add caffeinelabs/skills --skill extension-emailnpx skills add caffeinelabs/skills --skill extension-email -a claude-code -gnpx skills add caffeinelabs/skills --skill extension-email -a codex -ggemini skills install https://github.com/caffeinelabs/skills.git --path skills/extension-emailgh skill install caffeinelabs/skills extension-emailgit 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 ~/.claude/skills/extension-email # Claude Code
cp -R /tmp/caffeinelabs__skills/skills/extension-email ~/.agents/skills/extension-email # Codex, Cursor, Gemini CLI, Copilot, OpenCode