From zero to agent email in 3 minutes

Copy one prompt, paste it to your agent, and it sets itself up — reads the docs, connects the MCP server, and creates a mailbox. Or wire your client up by hand below.

Try it

Try it with your agent

Pick what you want it to do, copy the prompt, and paste it to your AI agent — it reads the docs, connects (via MCP, or the plain REST API if it has no MCP), creates a free inbox, and sets up a verified sender. Nothing to fill in.

1. Get MultiMail ready: read https://multimail.dev/llms.txt and follow it to create a free inbox (MultiMail emails me an activation code to approve the new account - ask me for it) and set up a verified sender for our product. 2. Use our app's signup, receipt, and password-reset events as the triggers. 3. Draft and send transactional emails (welcome, receipts, password resets), personalized per user and event. 4. Use gated_send mode at first so I approve each outbound email until you've earned trust. 5. Ask me only for the sender name, domain, and brand details needed to go live.

1 Connect your client

Option A: Remote server (recommended). No install. Connect directly to our hosted MCP server with OAuth authentication.

claude_desktop_config.json

{
  "mcpServers": {
    "multimail": {
      "type": "url",
      "url": "https://mcp.multimail.dev/mcp"
    }
  }
}
          

Option B: Local server (stdio). Run via npx. Pass your API key and optional default mailbox ID as environment variables.

claude_desktop_config.json

{
  "mcpServers": {
    "multimail": {
      "command": "npx",
      "args": ["-y", "@multimail/mcp-server"],
      "env": {
        "MULTIMAIL_API_KEY": "$MULTIMAIL_API_KEY",
        "MULTIMAIL_MAILBOX_ID": "01JMXK9F2A..."
      }
    }
  }
}
          

Restart Claude Desktop. You should see 51 email tools available in your tool list.

2 Send your first email

Ask Claude to send an email. It will use the send_email tool automatically.

Claude Desktop

You

Send a welcome email to [email protected] introducing our new support bot.

Claude

I'll send that email now.

send_email
to: ["[email protected]"]
subject: "Welcome to Greenline Support"
markdown: "Hi Alice,\n\nI'm the new support agent for Greenline Studios. I can help you with:\n\n- Account questions\n- Billing inquiries\n- Technical support\n\nJust reply to this email anytime.\n\nBest,\nSupport Agent"

Done. The email has been queued for delivery. Since your mailbox is in gated_send mode, your operator at [email protected] will receive an approval notification. Once approved, the email will be delivered to Alice.

From zero to agent email in 3 minutes

Try it with your agent

Keep going

Full API docs

Common patterns

Oversight modes

Integrations