This skill should be used when the user asks to "perform SMTP penetration testing", "enumerate email users", "test for open mail relays", "grab SMTP banners", "brute force email credentials", or "assess mail server security". It provides comprehensive techniques for testing SMTP server security.
Install
npx skills add davila7/claude-code-templates --skill 'SMTP Penetration Testing'npx skills add davila7/claude-code-templates --skill 'SMTP Penetration Testing' -a claude-code -gnpx skills add davila7/claude-code-templates --skill 'SMTP Penetration Testing' -a codex -ggemini skills install https://github.com/davila7/claude-code-templates.git --path cli-tool/components/skills/security/smtp-penetration-testinggh skill install davila7/claude-code-templates 'SMTP Penetration Testing'git clone --depth 1 https://github.com/davila7/claude-code-templates /tmp/davila7__claude-code-templates
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/davila7__claude-code-templates/cli-tool/components/skills/security/smtp-penetration-testing ~/.claude/skills/'SMTP Penetration Testing' # Claude Code
cp -R /tmp/davila7__claude-code-templates/cli-tool/components/skills/security/smtp-penetration-testing ~/.agents/skills/'SMTP Penetration Testing' # Codex, Cursor, Gemini CLI, Copilot, OpenCode