How to Use the MailSlurp MCP in Claude

Q: How do I configure MailSlurp in Claude Desktop?

Edit the claudedesktopconfig.json file in your application support folder. Add the MCP Server command and restart the app, or paste the remote URL into Claude Web's integration settings.

Q: Can Claude Desktop read attachments using MailSlurp?

The getemaildetails tool pulls the complete content for a specific email. If your application sends attachments, you will see the metadata, but binary file extraction depends on your client's rendering capabilities.

Automate your email testing workflows directly from Claude Desktop with temporary inboxes and live message polling via this MCP Server.

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Connect MailSlurp MCP to Claude Desktop

Create your Vinkius account to connect MailSlurp 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.

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Setup MailSlurp with Claude Desktop

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Generate and manage inboxes in Claude Desktop

The `create_random_inbox` tool provisions a temporary email address the moment you ask your agent to test a signup flow. You get a functional endpoint without clicking through a web interface. When the test finishes, `delete_specific_inbox` wipes the resource so you avoid cluttering your account. Claude can also audit your existing test infrastructure. By calling `list_all_inboxes`, your AI client grabs every active address tied to your MailSlurp account. This keeps your testing environment clean and prevents you from hitting rate limits on abandoned addresses.

Send outbound messages and read responses

The `get_email_details` tool fetches the full HTML body, subject line, and sender information for a specific message. Testing password resets requires reading the actual email content. Your agent parses this data to extract verification codes or confirmation links automatically. You can also test inbound application logic. Using `send_email_from_inbox`, Claude fires off messages from your temporary addresses to your application's receiving endpoints. You define the recipient and content, and the server handles the delivery mechanics.

Wait for asynchronous email delivery

The `wait_for_latest_email` tool long-polls the MailSlurp API until a new message arrives. Email delivery takes unpredictable amounts of time. Instead of failing immediately, this MCP Server waits for the network. If the email is already there, it returns the payload instantly. Batch processing tests require a different approach. The `wait_for_email_count` tool pauses your workflow until a specific number of messages hit the inbox. Once the threshold is met, your agent uses `list_inbox_emails` to pull the batch and verify the results.

Setup guide

Set up MailSlurp 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 MailSlurp 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 MailSlurp 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 mailslurp-mcp.

json

{
  "mcpServers": {
    "mailslurp-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 MailSlurp. 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 MailSlurp MCP in Claude Desktop

Edit the `claude_desktop_config.json` file in your application support folder. Add the MCP Server command and restart the app, or paste the remote URL into Claude Web's integration settings.

The `get_email_details` tool pulls the complete content for a specific email. If your application sends attachments, you will see the metadata, but binary file extraction depends on your client's rendering capabilities.

Asynchronous delivery means messages might take a minute to arrive. Your agent uses `wait_for_latest_email` to long-poll the server, which keeps the connection open until the message drops into the inbox.

You have two paths for this MCP Server. The desktop app runs it locally via stdio, while the web version connects to a remote URL through the custom connector settings.

This server processes email bodies, subject lines, and sender addresses. Vinkius isolates this data inside a V8 sandbox during execution. The system destroys the environment immediately after the API returns the payload, leaving zero residual traces behind.

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