How do I find my Inbox ID?

Use the `list_all_inboxes` tool to see a comprehensive list of all your MailSlurp addresses along with their unique IDs.

What is the benefit of the 'wait-for' tools?

They hold the connection until an email arrives, making it easy to test asynchronous processes (like password resets) without writing complex retry loops.

Where do I find my API Key?

Log in to your MailSlurp dashboard and copy the API key from the Home or API Settings section.

MailSlurp MCP Server for Claude Desktop 8 tools — connect in under 2 minutes

Name: MailSlurp
Availability: InStock
Author: Vinkius

modelcontextprotocol.io/quickstart/user

Built by Vinkius GDPR 8 Tools IDE

Claude Desktop is Anthropic's native application for interacting with Claude AI models on macOS and Windows. It was the first consumer application to ship with built-in MCP support, making it the reference implementation for the Model Context Protocol standard.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

RecommendedModern Approach — Zero Configuration

Vinkius Desktop App

The modern way to manage MCP Servers — no config files, no terminal commands. Install MailSlurp and 2,500+ MCP Servers from a single visual interface.

Download Free Open SourceNo signup required

Classic Setup·json

{
  "mcpServers": {
    "mailslurp": {
      // Your Vinkius token. get it at cloud.vinkius.com
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* 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.

Claude Desktop is the definitive way to connect MailSlurp to your AI workflow. Add Vinkius Edge URL to your config, restart the app, and Claude immediately exposes all 8 tools in the chat interface. ask a question, Claude calls the right tool, and you see the answer. Zero code, zero context switching.

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 Claude Desktop 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 Claude Desktop via MCP

Follow these steps to integrate the MailSlurp MCP Server with Claude Desktop.

Open Claude Desktop Settings

Go to Settings → Developer → Edit Config to open claude_desktop_config.json

Add the MCP Server

Paste the configuration above into the mcpServers section

Restart Claude Desktop

Close and reopen Claude Desktop to load the new server

Start using MailSlurp

Look for the 🔌 icon in the chat. your 8 tools are now available

Why Use Claude Desktop with the MailSlurp MCP Server

Claude Desktop by Anthropic provides unique advantages when paired with MailSlurp through the Model Context Protocol.

Claude Desktop is the reference MCP client. it was designed alongside the protocol itself, ensuring the most complete and stable MCP implementation available

Zero-code configuration: add a server URL to a JSON file and Claude instantly discovers and exposes all available tools in the chat interface

Claude's extended thinking capability lets it reason through multi-step tool usage, chaining multiple API calls to answer complex questions

Enterprise-grade security with local config storage. your tokens never leave your machine, and connections go directly to Vinkius Edge network

MailSlurp + Claude Desktop Use Cases

Practical scenarios where Claude Desktop combined with the MailSlurp MCP Server delivers measurable value.

Interactive data exploration: ask Claude to query DNS records, look up WHOIS data, and cross-reference results in a single conversation

Ad-hoc security audits: type a domain name and let Claude enumerate subdomains, check DNS history, and flag configuration anomalies. all through natural language

Executive briefings: generate comprehensive domain intelligence reports by asking Claude to compile findings into a formatted summary

Learning and training: new team members can explore API capabilities conversationally without needing to read documentation

MailSlurp MCP Tools for Claude Desktop (8)

These 8 tools become available when you connect MailSlurp to Claude Desktop 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 Claude Desktop

Ready-to-use prompts you can give your Claude Desktop 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 Claude Desktop

Common issues when connecting MailSlurp to Claude Desktop through the Vinkius, and how to resolve them.

Server not appearing after restart

Ensure the JSON is valid (no trailing commas). Check the file path: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\\Claude\\ (Windows).

Authentication error

Verify your Vinkius token is correct. Go to cloud.vinkius.com to regenerate it if needed.

Tools not showing in chat

Click the 🔌 icon at the bottom of the chat input. If it shows 0 tools, the server may still be connecting. wait a few seconds.

MailSlurp + Claude Desktop FAQ

Common questions about integrating MailSlurp MCP Server with Claude Desktop.

How does Claude Desktop discover MCP tools?

When Claude Desktop starts, it reads the claude_desktop_config.json file and connects to each configured MCP server. It calls the tools/list endpoint to fetch the schema for every available tool, then surfaces them as clickable options in the chat interface via the 🔌 icon.

What happens if the MCP server is temporarily unavailable?

Claude Desktop handles disconnections gracefully. if the server is unreachable at startup, the tools simply won't appear. Once the server becomes available again, restarting Claude Desktop will re-establish the connection. There is no timeout penalty or error loop.

Can I connect multiple MCP servers simultaneously?

Yes. You can add as many servers as you need in the mcpServers section of the config file. Each server appears as a separate tool provider, and Claude can use tools from multiple servers in a single conversation turn.

Is there a limit on the number of tools per server?

Claude Desktop can handle hundreds of tools per server. However, for optimal LLM performance, Vinkius servers are designed to expose focused, well-documented tool sets rather than overwhelming the model with too many options.

Does Claude Desktop support Streamable HTTP transport?

Yes. Claude Desktop supports both SSE (Server-Sent Events) and the newer Streamable HTTP transport that Vinkius uses. Simply provide the server URL. Claude auto-negotiates the transport protocol.