Use this skill for Sendmux account/team administration with a root API key or Management-scoped OAuth connection. This is the go-to skill for domain lifecycle work — create a sending domain, fetch its DNS/zone-file records, verify DNS/MX — even if asked as a single quick step.
Install
npx skills add Sendmux/skills --skill sendmux-managementnpx skills add Sendmux/skills --skill sendmux-management -a claude-code -gnpx skills add Sendmux/skills --skill sendmux-management -a codex -ggemini skills install https://github.com/Sendmux/skills.git --path skills/sendmux-managementgh skill install Sendmux/skills sendmux-managementgit clone --depth 1 https://github.com/Sendmux/skills /tmp/Sendmux__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/Sendmux__skills/skills/sendmux-management ~/.claude/skills/sendmux-management # Claude Code
cp -R /tmp/Sendmux__skills/skills/sendmux-management ~/.agents/skills/sendmux-management # Codex, Cursor, Gemini CLI, Copilot, OpenCode