MailSlurp MCP Server for Mastra AI 8 tools — connect in under 2 minutes
Mastra AI is a TypeScript-native agent framework built for modern web stacks. Connect MailSlurp 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: {
"mailslurp": {
url: "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
},
},
});
const tools = await mcpClient.getTools();
const agent = new Agent({
name: "MailSlurp Agent",
instructions:
"You help users interact with MailSlurp " +
"using 8 tools.",
model: openai("gpt-4o"),
tools,
});
const result = await agent.generate(
"What can I do with MailSlurp?"
);
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 MailSlurp MCP Server
Connect your MailSlurp account to any AI agent to automate your email testing and asynchronous message management. This MCP server enables your agent to create virtual inboxes, send and receive emails, and handle complex automation scenarios using long-polling 'wait-for' methods directly from natural language interfaces.
Mastra's agent abstraction provides a clean separation between LLM logic and MailSlurp tool infrastructure. Connect 8 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
- Virtual Inbox Management — Create random or custom email addresses and list all managed inboxes in your account
- Email Automation — Long-poll for the latest incoming email or wait until a specific email count is reached for testing suites
- Message Retrieval — List and inspect messages received by any virtual address, including full HTML and text bodies
- Outbound Capability — Send emails directly from any of your MailSlurp addresses programmatically
- Infrastructure Maintenance — Permanently delete individual messages or entire virtual inboxes via simple commands
- Metadata Inspection — Retrieve detailed technical headers and attachment metadata for any received email
The MailSlurp MCP Server exposes 8 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 MailSlurp to Mastra AI via MCP
Follow these steps to integrate the MailSlurp 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 8 tools from MailSlurp via MCP
Why Use Mastra AI with the MailSlurp MCP Server
Mastra AI provides unique advantages when paired with MailSlurp through the Model Context Protocol.
Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure. add MailSlurp 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 MailSlurp 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
MailSlurp + Mastra AI Use Cases
Practical scenarios where Mastra AI combined with the MailSlurp MCP Server delivers measurable value.
Automated workflows: build multi-step agents that query MailSlurp, process results, and trigger downstream actions in a typed pipeline
SaaS integrations: embed MailSlurp as a first-class tool in your product's AI features with Mastra's clean agent API
Background jobs: schedule Mastra agents to query MailSlurp on a cron and store results in your database automatically
Multi-agent systems: create specialist agents that collaborate using MailSlurp tools alongside other MCP servers
MailSlurp MCP Tools for Mastra AI (8)
These 8 tools become available when you connect MailSlurp to Mastra AI via MCP:
create_random_inbox
Create a new random email address
delete_specific_inbox
Delete an inbox and its emails
get_email_details
Get complete content for a specific email
list_all_inboxes
List all MailSlurp inboxes
list_inbox_emails
List emails received by an inbox
send_email_from_inbox
Requires recipient and content. Send an email using a MailSlurp address
wait_for_email_count
Wait until an inbox has a certain number of emails
wait_for_latest_email
Returns the latest one immediately if present. Long-poll for the next incoming email
Example Prompts for MailSlurp in Mastra AI
Ready-to-use prompts you can give your Mastra AI agent to start working with MailSlurp immediately.
"Create a new random inbox in MailSlurp."
"Wait for the next email to arrive in inbox 'inbox-xyz'."
"Send an email to 'user@example.com' from inbox 'inbox-xyz'."
Troubleshooting MailSlurp MCP Server with Mastra AI
Common issues when connecting MailSlurp to Mastra AI through the Vinkius, and how to resolve them.
createMCPClient not exported
npm install @mastra/mcpMailSlurp + Mastra AI FAQ
Common questions about integrating MailSlurp 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 MailSlurp with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
Anthropic's native desktop app for Claude with built-in MCP support.
AI-first code editor with integrated LLM-powered coding assistance.
GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
Autonomous AI coding agent that runs inside VS Code.
Anthropic's agentic CLI for terminal-first development.
Python SDK for building production-grade OpenAI agent workflows.
Google's framework for building production AI agents.
Type-safe agent development for Python with first-class MCP support.
TypeScript toolkit for building AI-powered web applications.
TypeScript-native agent framework for modern web stacks.
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 MailSlurp to Mastra AI
Get your token, paste the configuration, and start using 8 tools in under 2 minutes. No API key management needed.