AgentMail MCP Server for Mastra AI 11 tools — connect in under 2 minutes
Mastra AI is a TypeScript-native agent framework built for modern web stacks. Connect AgentMail through Vinkius and Mastra agents discover all tools automatically. type-safe, streaming-ready, and deployable anywhere Node.js runs.
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Vinkius supports streamable HTTP and SSE.
import { Agent } from "@mastra/core/agent";
import { createMCPClient } from "@mastra/mcp";
import { openai } from "@ai-sdk/openai";
async function main() {
// Your Vinkius token. get it at cloud.vinkius.com
const mcpClient = await createMCPClient({
servers: {
"agentmail": {
url: "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
},
},
});
const tools = await mcpClient.getTools();
const agent = new Agent({
name: "AgentMail Agent",
instructions:
"You help users interact with AgentMail " +
"using 11 tools.",
model: openai("gpt-4o"),
tools,
});
const result = await agent.generate(
"What can I do with AgentMail?"
);
console.log(result.text);
}
main();
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
About AgentMail MCP Server
Connect AgentMail to your AI agent and unlock a programmable email client. Stop relying on complex integrations and grant your agent its own functional inbox to communicate with the world.
Mastra's agent abstraction provides a clean separation between LLM logic and AgentMail tool infrastructure. Connect 11 tools through Vinkius and use Mastra's built-in workflow engine to chain tool calls with conditional logic, retries, and parallel execution. deployable to any Node.js host in one command.
What you can do
- Inboxes — Create, list, and delete custom email addresses on the fly for your agent
- Threads — Scan active conversations and read full historical threads natively
- Messages — Send new emails, reply contextually to specific threads, and forward messages
- Attachments — Extract and process files attached to incoming emails automatically
The AgentMail MCP Server exposes 11 tools through the Vinkius. Connect it to Mastra AI in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
How to Connect AgentMail to Mastra AI via MCP
Follow these steps to integrate the AgentMail MCP Server with Mastra AI.
Install dependencies
Run npm install @mastra/core @mastra/mcp @ai-sdk/openai
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token
Run the agent
Save to agent.ts and run with npx tsx agent.ts
Explore tools
Mastra discovers 11 tools from AgentMail via MCP
Why Use Mastra AI with the AgentMail MCP Server
Mastra AI provides unique advantages when paired with AgentMail through the Model Context Protocol.
Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure. add AgentMail without touching business code
Built-in workflow engine chains MCP tool calls with conditional logic, retries, and parallel execution for complex automation
TypeScript-native: full type inference for every AgentMail tool response with IDE autocomplete and compile-time checks
One-command deployment to any Node.js host. Vercel, Railway, Fly.io, or your own infrastructure
AgentMail + Mastra AI Use Cases
Practical scenarios where Mastra AI combined with the AgentMail MCP Server delivers measurable value.
Automated workflows: build multi-step agents that query AgentMail, process results, and trigger downstream actions in a typed pipeline
SaaS integrations: embed AgentMail as a first-class tool in your product's AI features with Mastra's clean agent API
Background jobs: schedule Mastra agents to query AgentMail on a cron and store results in your database automatically
Multi-agent systems: create specialist agents that collaborate using AgentMail tools alongside other MCP servers
AgentMail MCP Tools for Mastra AI (11)
These 11 tools become available when you connect AgentMail to Mastra AI via MCP:
create_inbox
You can optionally link it to a custom domain. Create a new email inbox for an agent
delete_inbox
Warning: this deletes all emails in it. Delete a specific inbox by ID
forward_message
You can optionally add text to the forwarded message. Forward an existing email message
get_attachment
Attachments might be encoded in base64. Ensure you parse or read it correctly. Download or read a specific attachment from a message
get_inbox
Get details of a specific inbox by ID
get_thread
Requires a thread_id. Read all messages inside a specific conversation thread
list_inboxes
An inbox is required to send or receive emails. Returns an array of inboxes with their IDs, email addresses, and names. List all inboxes assigned to the AgentMail API Key
list_threads
Returns a list of thread objects including subject lines and recent message previews. The agent needs an inbox_id first. List conversation threads inside an inbox
reply_to_message
The thread will be preserved. Reply to an existing email message/thread
send_message
Requires the sender inbox_id, which you can get from list_inboxes. Send a brand new email message
update_message
Update an existing message metadata (like marking it as read)
Example Prompts for AgentMail in Mastra AI
Ready-to-use prompts you can give your Mastra AI agent to start working with AgentMail immediately.
"Create a new inbox for our support team."
"Check all my unread threads in the main inbox today."
"Reply to the client thanking them and attach the pricing PDF."
Troubleshooting AgentMail MCP Server with Mastra AI
Common issues when connecting AgentMail to Mastra AI through the Vinkius, and how to resolve them.
createMCPClient not exported
npm install @mastra/mcpAgentMail + Mastra AI FAQ
Common questions about integrating AgentMail MCP Server with Mastra AI.
How does Mastra AI connect to MCP servers?
MCPClient with the server URL and pass it to your agent. Mastra discovers all tools and makes them available with full TypeScript types.Can Mastra agents use tools from multiple servers?
Does Mastra support workflow orchestration?
Connect AgentMail with your favorite client
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Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect AgentMail to Mastra AI
Get your token, paste the configuration, and start using 11 tools in under 2 minutes. No API key management needed.