Mail Security Tools MCP

An MCP server providing email security analysis tools including DMARC, SPF, DKIM, and MX record checks, graded security scores, email address validation, bulk domain scoring, and webhook-based monitoring for DNS changes. It supports both free lookups and paid services via x402 micropayments.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-19Operated by Orion CMD LLC

MCP endpoint (Streamable HTTP)

https://api.mailsecuritytools.com/mcp

Vendor documentation

What you can do with it

Check DMARC, SPF, DKIM, and MX records for a domain
Generate a graded email security score (0-100)
Validate email address syntax and deliverability
Monitor domains for DNS configuration changes via webhooks

Tools advertised by the last live check:

check_domain_email_security
pricing
email_security_score
check_email_address
email_fix_plan
bulk_email_security_score
watch_status

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http mail-security-tools-mcp https://api.mailsecuritytools.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add mail-security-tools-mcp --url https://api.mailsecuritytools.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable mail-security-tools-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "mail-security-tools-mcp": {
      "url": "https://api.mailsecuritytools.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "mail-security-tools-mcp": {
      "type": "streamableHttp",
      "url": "https://api.mailsecuritytools.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start mail-security-tools-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "mail-security-tools-mcp": {
      "type": "http",
      "url": "https://api.mailsecuritytools.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http mail-security-tools-mcp https://api.mailsecuritytools.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "mail-security-tools-mcp": {
      "url": "https://api.mailsecuritytools.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "mail-security-tools-mcp": {
      "serverUrl": "https://api.mailsecuritytools.com/mcp"
    }
  }
}

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