AI
Send email from your AI tools
A hosted MCP server for agents that can call tools, and a ready-made prompt for app builders. Same keys, limits and log as the API.
Sign in with one click — Chat apps connect through OAuth — no key to copy.
Coding agents — Add the MCP server with an agent key.
Claude CodeSetup guide →CursorSetup guide →CodexSetup guide →GitHub CopilotSetup guide →Gemini CLISetup guide →
App builders — Add a secret and paste a prompt; your app calls the REST API.
Agents
Give each agent its own key and revoke it on its own. A request to mail a whole audience waits for a person's approval.
MCP
Streamable HTTP at /mcp, OAuth 2.1 with PKCE, and tools to send, batch, check events and set up domains.
Skills
A SKILL.md that teaches an agent the safe way to send: test keys, verified domains, idempotency and events.