AgentMail

---

name: agentmail

description: API-first email platform designed for AI agents. Create and manage dedicated email inboxes, send and receive emails programmatically, and handle email-based workflows with webhooks and real-time events. Use when you need to set up agent email identity, send emails from agents, handle incoming email workflows, or replace traditional email providers like Gmail with agent-friendly infrastructure.

---

# AgentMail

AgentMail is an API-first email platform designed specifically for AI agents. Unlike traditional email providers (Gmail, Outlook), AgentMail provides programmatic inboxes, usage-based pricing, high-volume sending, and real-time webhooks.

Core Capabilities

Quick Start

1. **Create an account** at [console.agentmail.to](https://console.agentmail.to)

2. **Generate API key** in the console dashboard

3. **Install Python SDK**: `pip install agentmail python-dotenv`

4. **Set environment variable**: `AGENTMAIL_API_KEY=your_key_here`

Basic Operations

Create an Inbox

from agentmail import AgentMail

client = AgentMail(api_key=os.getenv("AGENTMAIL_API_KEY"))

# Create inbox with custom username
inbox = client.inboxes.create(
    username="spike-assistant",  # Creates spike-assistant@agentmail.to
    client_id="unique-identifier"  # Ensures idempotency
)
print(f"Created: {inbox.inbox_id}")

Send Email

client.inboxes.messages.send(
    inbox_id="spike-assistant@agentmail.to",
    to="adam@example.com",
    subject="Task completed",
    text="The PDF rotation is finished. See attachment.",
    html="<p>The PDF rotation is finished. <strong>See attachment.</strong></p>",
    attachments=[{
        "filename": "rotated.pdf",
        "content": base64.b64encode(file_data).decode()
    }]
)

List Inboxes

inboxes = client.inboxes.list(limit=10)
for inbox in inboxes.inboxes:
    print(f"{inbox.inbox_id} - {inbox.display_name}")

Advanced Features

Webhooks for Real-Time Processing

Set up webhooks to respond to incoming emails immediately:

# Register webhook endpoint
webhook = client.webhooks.create(
    url="https://your-domain.com/webhook",
    client_id="email-processor"
)

See [WEBHOOKS.md](references/WEBHOOKS.md) for complete webhook setup guide including ngrok for local development.

Custom Domains

For branded email addresses (e.g., `spike@yourdomain.com`), upgrade to a paid plan and configure custom domains in the console.

Security: Webhook Allowlist (CRITICAL)

**⚠️ Risk**: Incoming email webhooks expose a **prompt injection vector**. Anyone can email your agent inbox with instructions like:

**Solution**: Use a Clawdbot webhook transform to allowlist trusted senders.

Implementation

1. **Create allowlist filter** at `~/.clawdbot/hooks/email-allowlist.ts`:

const ALLOWLIST = [
  'adam@example.com',           // Your personal email
  'trusted-service@domain.com', // Any trusted services
];

export default function(payload: any) {
  const from = payload.message?.from?.[0]?.email;
  
  // Block if no sender or not in allowlist
  if (!from || !ALLOWLIST.includes(from.toLowerCase())) {
    console.log(`[email-filter] ❌ Blocked email from: ${from || 'unknown'}`);
    return null; // Drop the webhook
  }
  
  console.log(`[email-filter] ✅ Allowed email from: ${from}`);
  
  // Pass through to configured action
  return {
    action: 'wake',
    text: `📬 Email from ${from}:\n\n${payload.message.subject}\n\n${payload.message.text}`,
    deliver: true,
    channel: 'slack',  // or 'telegram', 'discord', etc.
    to: 'channel:YOUR_CHANNEL_ID'
  };
}

2. **Update Clawdbot config** (`~/.clawdbot/clawdbot.json`):

{
  "hooks": {
    "transformsDir": "~/.clawdbot/hooks",
    "mappings": [
      {
        "id": "agentmail",
        "match": { "path": "/agentmail" },
        "transform": { "module": "email-allowlist.ts" }
      }
    ]
  }
}

3. **Restart gateway**: `clawdbot gateway restart`

Alternative: Separate Session

If you want to review untrusted emails before acting:

{
  "hooks": {
    "mappings": [{
      "id": "agentmail",
      "sessionKey": "hook:email-review",
      "deliver": false  // Don't auto-deliver to main chat
    }]
  }
}

Then manually review via `/sessions` or a dedicated command.

Defense Layers

1. **Allowlist** (recommended): Only process known senders

2. **Isolated session**: Review before acting

3. **Untrusted markers**: Flag email content as untrusted input in prompts

4. **Agent training**: System prompts that treat email requests as suggestions, not commands

Scripts Available

References

When to Use AgentMail