MCP server

Mail Security Tools Official

com.mailsecuritytools.api/email-security

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

DMARC/SPF/DKIM/MX checks, email score, 100-domain bulk score, webhook watch alerts (x402 USDC).

Website

At a glance

Type

MCP server

Publisher

mailsecuritytools.com (verified by the MCP Registry)

Status

Working at last check

Tools

7

Token cost

About 960 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.email-security]
url = "https://api.mailsecuritytools.com/mcp"

Gemini CLI

{"mcpServers":{"email-security":{"httpUrl":"https://api.mailsecuritytools.com/mcp"}}}

Cursor

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

VS Code

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

Antigravity

agy mcp add email-security https://api.mailsecuritytools.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"email-security","server_url":"https://api.mailsecuritytools.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"email-security","server_url":"https://api.mailsecuritytools.com/mcp"}

Tools

• bulk_email_security_score ~185 tokens
  Score up to 100 domains' email security in one call (SPF 30, DMARC 40, DKIM 25, MX 5 from live DNS): per-domain score, grade and issues, plus a summary with grade counts, domains missing DMARC or SPF, and the worst 10. For MSPs and agents checking a client or vendor list. Costs $0.50 USDC via x402;
• check_domain_email_security ~141 tokens
  Free. Look up a domain's MX, SPF (record, DNS lookup count, all qualifier), DMARC (policy, rua) and DKIM (common selectors, key size) from live DNS and list issues. No payment.
• check_email_address ~130 tokens
  Check one email address: syntax, MX / null MX, disposable domain, role account, free provider; verdict ok / risky / undeliverable. No SMTP probe. Costs $0.01 USDC via x402; errors are not charged.
• email_fix_plan ~175 tokens
  Email security fix plan for one domain: the exact SPF, DKIM and DMARC records to publish (create / replace / keep, name, value, why), in order, with click-path steps for the domain's DNS host and a staged DMARC rollout. Non-sending domains get a lock-down set. Costs $1 USDC via x402; errors are not
• email_security_score ~142 tokens
  Grade a domain's email security 0-100 (A-F): SPF 30, DMARC 40, DKIM 25, MX 5, from live DNS, with findings and the top 3 fixes. Read-only. Costs $0.01 USDC via x402; errors are not charged.
• pricing ~61 tokens
  Free. Prices of the paid tools, payment network and receiving address.
• watch_status ~126 tokens
  Free. Status of a paid email setup watch (created with POST /v1/watch): items, expiry, last check, last webhook delivery and current SPF/DMARC/DKIM/MX state.

Browse

• Domains and DNS
• Email
• Payments

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