How to Use the Mailtrap MCP in Claude

Q: How do I set up Mailtrap in Claude Desktop?

Open your claudedesktopconfig.json file in your system's application support directory. Add the server details under the mcpServers key, save the file, and restart the app to see the tools.

Q: How does Mailtrap verify my domain in Claude Desktop?

You can check your current domain status by running getdomainstatus. It returns the exact configuration state, letting you verify your records without opening a browser dashboard.

Test email flows directly within Claude Desktop by connecting your sandbox to real API-driven previews.

See Vinkius in Action

Works with every AI agent you already use

…and any MCP-compatible client

MCP Servers - Free for Subscribers

Connect Mailtrap MCP to Claude Desktop

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

GDPR Free for Subscribers

Setup Mailtrap with Claude Desktop

Ask AI about this MCP

ChatGPT

Claude

Perplexity

Validate email layouts in Claude Desktop

Stop guessing how your templates look in different clients. Use `get_message_html` to pull the raw structure into your chat session for immediate visual inspection. Your agent can spot broken CSS or missing tags before you ever hit send. It turns your email testing into a quick, conversational task.

Manage your sandbox inbox with Claude Desktop

Keep your development environment clean without leaving your editor. Trigger `clear_sandbox_inbox` or `delete_sandbox_message` to remove clutter between test runs. This keeps your history focused. You only see the specific messages relevant to the feature you are currently building.

Send test emails via Claude Desktop

Run your logic through the ringer by using `send_test_email` directly from the interface. It triggers your actual dispatch flow so you see exactly how the server handles your data. This MCP Server provides the bridge between your code and the inbox. You verify the delivery success and metadata without switching tabs.

Setup guide

Set up Mailtrap MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The Mailtrap MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the Mailtrap MCP configuration

Copy the JSON snippet on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under mailtrap-mcp.

json

{
  "mcpServers": {
    "mailtrap-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Mailtrap. 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.

Why Choose Vinkius

Vinkius connects your tools to AI with real-time monitoring and automatic cost savings — all from one dashboard.

Connect Mailtrap now

Real-time monitoring

Live

visibility into every interaction

Connect your favorite tools to your AI and see exactly what's happening — every request, every response, in real time.

Built-in savings

60%

lower AI costs

Vinkius compresses data between your apps and your AI automatically. Lower bills every month — no configuration required.

Single dashboard

One

place for every integration

Every tool your AI connects to, managed from a single screen. One account, complete control.

Common questions about Mailtrap MCP in Claude Desktop

Open your `claude_desktop_config.json` file in your system's application support directory. Add the server details under the mcpServers key, save the file, and restart the app to see the tools.

This integration is designed for test data only. Never route production traffic through this MCP server, as it is intended to provide a safe, isolated environment for your development and QA workflows.

Yes. The configuration process is the same, just locate your config in the AppData folder. Once defined, the tools will appear in your chat interface just like on macOS.

You can check your current domain status by running `get_domain_status`. It returns the exact configuration state, letting you verify your records without opening a browser dashboard.

Your email content, including HTML payloads and metadata, is handled via encrypted API calls. We store nothing locally beyond your connection strings, ensuring your test artifacts remain in your isolated Mailtrap account.

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