How to Use the Mailinator MCP in Windsurf

Q: How do I configure Mailinator in Windsurf?

Edit your /.codeium/windsurf/mcpconfig.json file and add the MCP Server details under the mcpServers key. You can also use the Cascade UI to install it directly.

Catch test emails and verify authentication flows directly inside Windsurf without ever leaving your editor.

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Connect Mailinator MCP to Windsurf

Create your Vinkius account to connect Mailinator to Windsurf 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 Windsurf

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Windsurf MCP Server for Email Workflows

Cascade handles the entire testing loop for your email integrations. You tell the agent to verify a password reset flow, and it knows exactly what to do. It triggers your app's backend, then uses `list_inbox_messages` to wait for the email to drop into a disposable address. Once the message arrives, Cascade calls `extract_message_links` to grab the reset token. It doesn't ask you for permission or wait for you to click a button. The agent just executes the next step in your test script, proving the whole cycle works.

Inject and Inspect Test Data

Writing end-to-end tests usually means wrestling with mock SMTP servers. We skip that completely. You can tell Cascade to fire a fake payload using `inject_test_message` to see how your application handles incoming traffic. If your app processes inbound attachments, the agent pulls them down using `list_message_attachments` to verify file integrity. It reads the raw payload via `get_message_content` and writes the assertions right into your test files.

Manage Routing and SMS

Email isn't the only thing you need to test. If your platform sends two-factor authentication texts, Cascade monitors those too. It calls `list_private_sms` to grab the one-time password and feeds it back into your test runner. You also get visibility into how Mailinator handles your traffic. The agent can check `list_routing_rules` to ensure your webhooks trigger correctly, or hit `list_active_webhooks` to debug why a notification failed to fire.

Setup guide

Set up Mailinator MCP in Windsurf

Prerequisites

Windsurf IDE installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP configuration

Click the Cascade assistant icon in the sidebar, then click the hammer icon (🔨) at the top of the panel. Select "Configure" to open ~/.codeium/windsurf/mcp_config.json.
2

Add the Mailinator MCP

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

Refresh MCPs

Go back to the hammer icon (🔨) in Cascade and click "Refresh". Windsurf will detect the new server. No full restart is needed — the connection is hot-reloaded.
4

Verify in Cascade

Start a new Cascade conversation and ask something like "Show my Mailinator payment history." If connected, Cascade will call the Mailinator tools directly. You will see a green dot next to the server name in the MCP panel.

mcp_config.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 Windsurf

Edit your `~/.codeium/windsurf/mcp_config.json` file and add the MCP Server details under the `mcpServers` key. You can also use the Cascade UI to install it directly.

Yes. Cascade can access your disposable text messages by calling the SMS tool. This makes testing 2FA flows completely automated.

Mock SMTP servers require constant maintenance and infrastructure overhead. This integration lets your agent interact with real disposable inboxes instantly, saving you hours of setup time.

Yes, it does. When an email hits your disposable inbox, the agent uses the attachments tool to download and verify the files. You never have to manually check a web interface.

This setup processes ephemeral email content, SMS payloads, and attachment data. Mailinator inboxes are disposable by design, and the MCP protocol ensures your agent only reads the specific messages it requests during a test run.

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