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Mail Security Tools

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

MCP server · by api.mailsecuritytools.com

About

Mail Security Tools is an MCP server published by api.mailsecuritytools.com. Marketplaces we read that list it: 1 (Official MCP Registry). The last change we recorded was on 2026-10-15. As of our marketplace pass on 2026-10-19.

What it asks for

  • Runs remotely

None of the marketplaces we read publishes its tools or the settings it asks for.

What it declares, asks for and runs, in full

Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.

Works with

  • Claude Code
  • Codex
  • Cursor
  • VS Code
  • Copilot CLI

A one-click link opens the client, which asks you to confirm before it adds the server.

From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.

Observed by Ext Ops

Observed by Ext Ops on 2026-10-19: what the endpoint itself answered when asked to list its tools. We never call the tools.

Tools: 7

Server: mailsecuritytools 1.1.0 · MCP protocol version 2025-06-18

Tool metadata as listed on 2026-10-19: annotations on 7 of 7 tools · parameter descriptions on 6 of 6.

  • bulk_email_security_scoreScore 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…
  • check_domain_email_securityFree. 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_addressCheck 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_planEmail 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 s…
  • email_security_scoreGrade 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.
  • pricingFree. Prices of the paid tools, payment network and receiving address.
  • watch_statusFree. 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.

Its marketplaces publish no list of tools.

How we check endpoints

Connect

Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.

As a remote MCP server

Built from what Official MCP Registry declares.

Claude CodeTerminal
claude mcp add --transport http email-security https://api.mailsecuritytools.com/mcp
Codex~/.codex/config.toml
[mcp_servers.email-security]
url = "https://api.mailsecuritytools.com/mcp"
Cursor~/.cursor/mcp.json
{
  "mcpServers": {
    "email-security": {
      "url": "https://api.mailsecuritytools.com/mcp"
    }
  }
}

Where it is published

MarketplaceStatusVersionFiguresVerifiedFirst seen
Official MCP Registry (Open the registry record) Listed 1.1.0 No figure published Not marked

Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.

What changed

  1. Official MCP Registry: description changed
  2. Official MCP Registry: released version 1.1.0 (was 1.0.0)
  3. Became a product we track
  4. Official MCP Registry: appeared

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Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.

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