The Mail Security Tools MCP server,
connected in one click.
DMARC/SPF/DKIM/MX checks, email score, 100-domain bulk score, webhook watch alerts (x402 USDC). Connect the official Mail Security Tools MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Mail Security Tools to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http mail-security-tools https://api.mailsecuritytools.com/mcpRun in your terminal, then restart Claude Code.
Mail Security Tools · https://api.mailsecuritytools.com/mcp
What your AI can do with Mail Security Tools
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “check_domain_email_security”: Free. Look up a domain's MX, SPF (record, DNS lookup count, all qualifier), DMARC (policy, rua) and DKIM (common selectors, key size) from l.”
“Use “pricing”: Free. Prices of the paid tools, payment network and receiving address.”
“Use “email_security_score”: 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. C.”
“Use “check_email_address”: Check one email address: syntax, MX / null MX, disposable domain, role account, free provider; verdict ok / risky / undeliverable. No SMTP p.”
How secure is the Mail Security Tools MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Mail Security Tools holds up.
Official endpoint
Operated by Mail Security Tools (mailsecuritytools.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Mail Security Tools adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Mail Security Tools
Choose Mail Security Tools in the gate directory. No sign-in needed.
Use it anywhere
Mail Security Tools's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Mail Security Tools exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
check_domain_email_security — Free. Look up a domain's MX, SPF (record, DNS lookup count, all qualifier), DMARC (policy, rua) and DKIM (common selectors, key size) from l
pricing — Free. Prices of the paid tools, payment network and receiving address.
email_security_score — 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. C
check_email_address — Check one email address: syntax, MX / null MX, disposable domain, role account, free provider; verdict ok / risky / undeliverable. No SMTP p
email_fix_plan — Email security fix plan for one domain: the exact SPF, DKIM and DMARC records to publish (create / replace / keep, name, value, why), in ord
Who runs the Mail Security Tools MCP server?
The Mail Security Tools MCP server at a glance
https://api.mailsecuritytools.com/mcpQuestions, answered
Is there an official Mail Security Tools MCP server?
Yes — Mail Security Tools operates its own remote MCP server at api.mailsecuritytools.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Mail Security Tools to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Mail Security Tools in the directory. No account or sign-in is needed. From then on, Mail Security Tools's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Mail Security Tools runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Mail Security Tools MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Mail Security Tools in minutes. No credit card required.
Connect more than just Mail Security Tools
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Mail Security Tools in: Claude · Claude Code · ChatGPT · Cursor · VS Code
Give your AI Mail Security Tools — safely.
One URL. All MCPs. Full control. Free to start.
Get started free