MailTester Ninja

Connect Remote server

claude mcp add --transport http email-verification https://mcp.mailtester.ninja/mcp --header "X-API-Key: <X_API_KEY>"

{
  "mcpServers": {
    "email-verification": {
      "url": "https://mcp.mailtester.ninja/mcp",
      "headers": {
        "X-API-Key": "<X_API_KEY>"
      }
    }
  }
}

{
  "servers": {
    "email-verification": {
      "type": "http",
      "url": "https://mcp.mailtester.ninja/mcp",
      "headers": {
        "X-API-Key": "<X_API_KEY>"
      }
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://mcp.mailtester.ninja/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 2 found in our last check

• verify_email

  Check in real time whether an email address exists and can receive mail, by asking the recipient's mail server (no message is sent). Returns code "ok" (valid), "ko" (invalid) or "mb" (uncertain, such as a catch-all domain) with a message.

• find_email

  Find the work email address of a business contact, for professional outreach, from their first name, last name and company domain. The company's common address formats (first.last, flast, first, firstlast, first_last, f.last) are checked one by one with the company's own mail se…

Headers

Details

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