How to Use the Mailinator MCP in VS Code Copilot

Q: Can I list attachments using Mailinator in VS Code?

Yes. The listmessageattachments tool is included. It helps your team verify that your systems correctly handle email-based file inputs during your integration tests.

Manage ephemeral email testing across your team in VS Code Copilot with tools that catch messages in disposable inboxes.

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Connect Mailinator MCP to VS Code Copilot

Create your Vinkius account to connect Mailinator to VS Code Copilot 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 Mailinator with VS Code Copilot

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Team-Wide Email Testing in VS Code

Commit your `.vscode/mcp.json` file to the repository to standardize how your team tests email workflows. Every developer gets access to `list_inbox_messages` automatically. It removes the friction of manual setup. Everyone works with the same tools, ensuring consistent test coverage across your entire engineering organization.

Verify Webhooks with VS Code

Use `list_active_webhooks` to see how your notifications are configured. It lets you confirm your backend is firing events to the right endpoints during your sprint. If you need to change a rule, you can verify the current state first. It prevents errors that happen when team members lose track of their own notification settings.

Audit Usage for Your Team

Call `get_usage_statistics` to monitor how many messages your team is processing. It helps you stay within your limits and budget without needing an admin dashboard. It’s a simple way to keep your testing infrastructure healthy. You’ll know exactly when to scale up your plan based on real activity data.

Setup guide

Set up Mailinator MCP in VS Code Copilot

Prerequisites

VS Code 1.99 or later with GitHub Copilot extension
Active Vinkius subscription with a valid endpoint token

1

Open MCP configuration

Open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and run "MCP: Add Server". Select HTTP (Streamable) as the server type. VS Code will create .vscode/mcp.json in your workspace.
2

Add the Mailinator MCP

Paste the JSON snippet shown on the right into your .vscode/mcp.json. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Switch to Agent mode

Open Copilot Chat (Cmd+Shift+I / Ctrl+Shift+I) and switch to Agent mode using the dropdown. MCP tools are only available in Agent mode — they do not appear in Edit or Ask modes.
4

Verify the connection

In the Copilot Chat input, type # to list available tools. You should see the Mailinator tools listed. Try asking: "List my recent Mailinator transactions" and Copilot will invoke them automatically.

.vscode/mcp.json

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

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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 Mailinator. 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 Mailinator MCP in VS Code Copilot

Create a .vscode/mcp.json file in your project root. Committing this to Git allows everyone on the team to use the same tools in Copilot Chat.

The server handles non-production test data only. By running as an MCP server, it ensures that your sensitive infrastructure remains untouched and SOC 2 compliant.

Yes. The `list_message_attachments` tool is included. It helps your team verify that your systems correctly handle email-based file inputs during your integration tests.

Yes. Once the server is configured, switch Copilot Chat to Agent mode. The AI can then trigger tools to check your test inboxes automatically.

It only interacts with the disposable email and SMS messages you send to your test domains. No customer data or production credentials are ever accessed by the server.

Use it with your favorite AI tools

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