How to Use the AgentMail MCP in Mastra AI

Q: Can AgentMail trigger replies in Mastra AI?

Absolutely. You define the logic in your workflow, and the replytomessage tool executes it whenever your conditions are met.

Build automated email workflows in Mastra AI. Handle threads and replies with robust error-checking logic.

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Connect AgentMail MCP to Mastra AI

Create your Vinkius account to connect AgentMail to Mastra AI 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 Mastra AI

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Automating threads in Mastra AI

Chain your logic using `list_threads` and `reply_to_message` within your Mastra workflows. It handles the conversation history so you don't lose context. If a step fails, the framework automatically triggers your retry logic. It keeps your email communication consistent even when external services flicker.

Conditional email logic with MCP Server

Use `update_message` to mark emails as read once your agent processes them. You can branch your workflow based on the subject or sender metadata. Your agents decide when to escalate a thread to a human. The toolset provides the hooks necessary to move from automated sorting to manual intervention.

Managing multiple inboxes

The `list_inboxes` tool lets your agent switch identities during a single run. You can route different customer queries to specialized inboxes based on the thread content. This setup keeps your agent's communication organized. Each workflow step remains focused on a single email identity.

Setup guide

Set up AgentMail MCP in Mastra AI

Prerequisites

Node.js 18+ and a TypeScript project
@mastra/mcp + @mastra/core packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run npm install @mastra/mcp @mastra/core plus your preferred model provider (e.g. @ai-sdk/openai).
2

Configure the MCPClient
Create an MCPClient with your Vinkius endpoint as a URL object. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and inject tools
Call mcpClient.listTools() and spread the result into your agent's tools object. All AgentMail tools become native Mastra tools.
4

Run with any model
Swap openai("gpt-4o") for any AI SDK-compatible provider. Call agent.generate() and the agent routes tool calls through MCP automatically.

agent.ts

import { MCPClient } from "@mastra/mcp";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const mcpClient = new MCPClient({
  id: "agentmail-mcp-client",
  servers: {
    "agentmail-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

const agent = new Agent({
  name: "AgentMail Agent",
  model: openai("gpt-4o"),
  instructions: "You have access to AgentMail tools.",
  tools: {
    ...(await mcpClient.listTools()),
  },
});

const result = await agent.generate(
  "List recent AgentMail transactions"
);
console.log(result.text);

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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 Mastra AI

Register the server URL in your Mastra config file. The framework automatically discovers the tools and makes them available to your agents.

Absolutely. You define the logic in your workflow, and the `reply_to_message` tool executes it whenever your conditions are met.

Yes, Mastra handles the retries for all tool calls. If an email fails to send, the framework handles the backoff strategy for you.

You can add approval steps before calling any email tool. This keeps you in control of what your agent sends.

We use scoped tokens that limit access to specific inbox IDs. Your raw email messages are encrypted at rest and never shared with other users.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

OpenAI Agents SDK sdk-python

Google ADK sdk-python

Pydantic AI sdk-python

Vercel AI SDK sdk-typescript

Mastra AI sdk-typescript

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