Let an AI agent send email with MCP

The SendFlit MCP server lets an AI agent use your account through tools: sending email, managing contacts, and drafting broadcasts. In this tutorial you call the server directly with JSON-RPC, then connect an agent.

You’ll need: an API key with the sending scope, and a verified sending domain.

List the tools this key can use

curl -X POST https://mcp.sendflit.com/mcp \
  -H "Authorization: Bearer $SENDFLIT_KEY" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc": "2.0", "id": 1, "method": "tools/list"}'

A key with sending scope sees the sending tools. A read key sees only the read tools.

Call send_email

curl -X POST https://mcp.sendflit.com/mcp \
  -H "Authorization: Bearer $SENDFLIT_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 2,
    "method": "tools/call",
    "params": {
      "name": "send_email",
      "arguments": {
        "from": "hello@yourdomain.com",
        "to": "user@example.com",
        "subject": "Your report is ready",
        "text": "The monthly report is attached in your dashboard."
      }
    }
  }'

send_email takes from, to, and either subject with html or text, or a template_name with variables. Add scheduled_at to send later.

Connect an agent

Point your MCP-compatible client at https://mcp.sendflit.com/mcp and give it the key as a bearer token. The server sends its own instructions to the agent on connect, so the agent knows to check the account before it sends.

Handle approvals

An agent key can be set up to need your approval for some actions. A call that needs approval returns a request. Review it in the dashboard, or read its decision with get_request.

Tips

Give agents their own key with the smallest scope they need. Use sending for agents that only send.
Keep an eye on the agent’s sends. Use list_emails to review what it sent.
For a full list of tools, see the MCP server guide.

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Let an AI agent send email with MCP

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