MailTester Ninja MCP Server: Install & Setup

Install MailTester Ninja in Claude Code

Claude Code

claude mcp add --transport http mailtester-ninja https://mcp.mailtester.ninja/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "mailtester-ninja": {
      "url": "https://mcp.mailtester.ninja/mcp"
    }
  }
}

Frequently asked questions

What does the MailTester Ninja MCP server do?

Verify email addresses live against their mail server and find work emails. Nothing stored.

Is the MailTester Ninja MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does MailTester Ninja run locally or remotely?

Remote. Hosted by the provider. You connect with a URL, nothing to install.

How do I add MailTester Ninja to Claude Code?

Run: claude mcp add --transport http mailtester-ninja https://mcp.mailtester.ninja/mcp

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