✨Now compatible with Claude & OpenAI

Email Infrastructure for AI Agents

Give your AI agents a real email address. AgentPost provides a Model Context Protocol server that lets agents send, receive, and wait for emails in real-time.

Start Building
agent-config.json
"mcpServers": {
  "agentpost": {
    "command": "npx",
    "args": ["-y", "@agentpost/server"],
    "env": {
      "MCPMAIL_API_KEY": "sk_live_..."
    }
  }
}

Everything your agent needs to
communicate with the world

Traditional email APIs are built for apps, not agents. AgentPost is designed from the ground up for autonomous interaction.

MCP Native Protocol

Built specifically for the Model Context Protocol. Works out of the box with Claude Desktop, Cursor, and any MCP-compliant client.

Long-Polling Watch

The secret sauce. The `watch_for_email` tool hangs until a new email arrives, allowing agents to react instantly without busy-waiting loops.

Universal Compatibility

Connect to Gmail, Outlook, or any IMAP/SMTP server. Or use our managed @agentpost.net inboxes for instant setup.

Custom Domains

Send emails from your own domain. Full SPF/DKIM/DMARC support ensures high deliverability for your agent's communications.

Enterprise Security

SOC2 compliant infrastructure. encrypted at rest and in transit. API keys with granular permission scoping.

Instant Provisioning

Create thousands of disposable email addresses on the fly via API. Perfect for testing flows or unique user identities.

How it works

Get your agent communicating in minutes, not days.

1

Install the Server

Add AgentPost to your Claude Desktop config or any MCP client configuration.

# In your mcp_settings.json
"mcpServers": {
  "agentpost": {
    "command": "npx",
    "args": ["-y", "@agentpost/server"],
    "env": { "MCPMAIL_API_KEY": "YOUR_KEY" }
  }
}
2

Agent Prompts

Your agent now has tools! Just ask it to handle email tasks.

Check my inbox for any emails from "AWS Billing" in the last 24 hours. If found, summarize the total amount.
TOOL CALL: search_email(query="from:AWS Billing after:2024-01-12")I found one email from AWS Billing. The total amount is $43.20.
3

Long-Running Monitors

Use the watch capability to have agents wake up when important emails arrive.

await use_mcp_tool(
  server_name: "agentpost",
  tool_name: "watch_for_email",
  arguments: {
    query: "subject:Critical Alert",
    timeout_ms: 600000
  }
);

Simple, transparent pricing

Start for free, scale as your agents grow. No credit card required for Hobby tier.

Hobby

$0/mo

For testing and personal projects.

  • 100 emails / month
  • 1 managed inbox
  • No custom domains
  • Community support
  • Basic rate limits
Most Popular

Starter

$19/mo

For individual developers and small bots.

  • 10,000 emails / month
  • 5 managed inboxes
  • 1 custom domain
  • Email support
  • IMAP/SMTP Connectors

Growth

$49/mo

For scaling agent fleets.

  • 50,000 emails / month
  • 20 managed inboxes
  • 5 custom domains
  • Priority support
  • Increased rate limits
  • Log retention (30 days)

Scale

$149/mo

High volume infrastructure.

  • 200,000 emails / month
  • Unlimited inboxes
  • Unlimited domains
  • 24/7 Dedicated support
  • Highest rate limits
  • Log retention (1 year)