How to Use the AgentMail MCP in OpenAI Agents SDK

Q: Can I use AgentMail with the OpenAI Agents SDK to build a customer support agent?

Yes, that's a perfect use case. Your agent can use listthreads to monitor an inbox, getthread to understand a customer's issue, and replytomessage to respond, all traced through your OpenAI dashboard.

Give your OpenAI Agents their own email inboxes to send, read, and manage messages in production.

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Connect AgentMail MCP to OpenAI Agents SDK

Create your Vinkius account to connect AgentMail to OpenAI Agents SDK and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup AgentMail with OpenAI Agents SDK

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Autonomous Email for Agents

Your agent can spin up its own email inboxes on the fly. Use `create_inbox` to generate a new address, maybe even on a custom domain you own. When it's done, `delete_inbox` cleans it all up. The OpenAI Agents SDK automatically discovers these tools. You just point it to the MCP server endpoint and your agents know how to `list_inboxes` and `get_inbox` details without any manual mapping. It's built for systems where multiple agents might need to coordinate over email.

Process Email with OpenAI Agents

Agents can read their mail. They start with `list_threads` to see what's new in an inbox, then use `get_thread` to pull a full conversation. This lets them follow a discussion before acting. If a message has a file, `get_attachment` pulls it down. The SDK's tracing means you can see every step in your OpenAI dashboard, watching exactly how an agent parsed an invoice or processed a support ticket from an email.

Let Agents Handle Correspondence

Your agents can now handle their own email communication. A `send_message` call fires off a new email. For existing conversations, `reply_to_message` keeps the thread intact, just like a person would. The SDK's guardrails are the real advantage here. You can set rules to prevent an agent from sending emails to the wrong address or forwarding sensitive data. It gives you the safety to let agents `forward_message` with confidence.

Setup guide

Set up AgentMail MCP in OpenAI Agents SDK

Prerequisites

Python 3.10+ installed
openai-agents package (pip install openai-agents)
Active Vinkius subscription with a valid endpoint token

1

Install the SDK

Run pip install openai-agents to install the OpenAI Agents SDK. The MCP integration is built-in — no extra dependencies needed.
2

Connect via SSE transport

Use MCPServerSse with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. The SDK auto-discovers all AgentMail tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives AgentMail tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate AgentMail tools and returns structured results. Copy the full example on the right to get started.

agent.py

import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerSse

async def main():
    async with MCPServerSse(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as server:
        agent = Agent(
            name="AgentMail Agent",
            instructions="You have access to AgentMail tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by AgentMail. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about AgentMail MCP in OpenAI Agents SDK

It's automatic. You pass the AgentMail MCP Server URL to the `MCPServerStreamableHttp` constructor. The SDK then introspects the server and makes all 11 tools, like `send_message`, available to your agent.

Yes, that's a perfect use case. Your agent can use `list_threads` to monitor an inbox, `get_thread` to understand a customer's issue, and `reply_to_message` to respond, all traced through your OpenAI dashboard.

Absolutely. Since the inboxes are managed by AgentMail, one agent can process an email and then pass the `thread_id` to a specialized agent. The second agent can then use `get_thread` to pick up the conversation right where it left off.

The AgentMail server will return an error. The OpenAI Agents SDK is designed to handle these API failures gracefully, which you can log and trace to debug your agent's logic.

AgentMail processes your email content, including message bodies and attachments, which pass through our ephemeral V8 Isolate sandboxes. Vinkius doesn't store your email data long-term; it's held only for processing and then discarded. Your API key is the only thing linking you to the inboxes.

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