Replaces the stale MCP-first AgentMail skill with CLI-first guidance:
self-signup + OTP verification, inbox/message/thread/label/attachment
flows, webhook and WebSocket delivery references, and MCP as an
alternative path. Declares AGENTMAIL_API_KEY (optional) so a stored key
reaches the sandboxed terminal while self-signup stays viable without
one.
Salvaged from PR #60811 — kept in optional-skills/ per the March 2026
decision that third-party-API-key skills are not bundled.
Haakam Aujla
14320d18df