Productivity · Official remote MCP server

The Deliverability Doctor MCP server,
connected in one click.

Check if a domain can be email-spoofed: SPF, DMARC, DKIM, MX graded from public DNS. Authless. Connect the official Deliverability Doctor MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.

Connect Deliverability Doctor free How it works

Free to start · No credit card · No hosting needed

Use this server

Add Deliverability Doctor 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 deliverability-doctor https://deliverability-doctor.deliverability-doctor.workers.dev/mcp

Run in your terminal, then restart Claude Code.

Deliverability Doctor · https://deliverability-doctor.deliverability-doctor.workers.dev/mcp

What you can do

What your AI can do with Deliverability Doctor

Real prompts you can type the moment it's connected — no setup, no docs to read.

“Use “check_email_security”: Checks whether a domain can be email-spoofed, using public DNS only. Verifies SPF (including the RFC 7208 multiple-record permerror), DMARC.”

“Use “compare_email_security”: Runs the email-security check on 2–5 domains and returns a comparison table with per-domain grades. Useful for checking your domain against.”

Security check

How secure is the Deliverability Doctor MCP server?

Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Deliverability Doctor holds up.

✓ Verified directory serverDeliverability Doctor · workers.dev

Official endpoint

Operated by Deliverability Doctor (workers.dev) 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 Deliverability Doctor adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.

Run the free scanner on Deliverability Doctor's server →

How it works

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 Deliverability Doctor

Choose Deliverability Doctor in the gate directory. No sign-in needed.

Use it anywhere

Deliverability Doctor's tools are live in every AI client you've connected — with rules and logging built in.

Connect Deliverability Doctor free

Free to start · No credit card · No hosting needed

Straight from the server

The actual tools Deliverability Doctor exposes

Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.

check_email_security — Checks whether a domain can be email-spoofed, using public DNS only. Verifies SPF (including the RFC 7208 multiple-record permerror), DMARC

compare_email_security — Runs the email-security check on 2–5 domains and returns a comparison table with per-domain grades. Useful for checking your domain against

Author

Who runs the Deliverability Doctor MCP server?

workers.dev

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Server facts

The Deliverability Doctor MCP server at a glance

Endpointhttps://deliverability-doctor.deliverability-doctor.workers.dev/mcp

Operated byDeliverability Doctor (workers.dev)

CategoryProductivity

Sign-inNone — public data only

Available in gateYes — one-click connect

Works withClaude, ChatGPT, Cursor & any MCP client

FAQ

Questions, answered

Is there an official Deliverability Doctor MCP server?

Yes — Deliverability Doctor operates its own remote MCP server at deliverability-doctor.deliverability-doctor.workers.dev. 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 Deliverability Doctor to Claude or ChatGPT?

Add gate's gateway URL to your AI client once, then pick Deliverability Doctor in the directory. No account or sign-in is needed. From then on, Deliverability Doctor's tools are available in every client you've connected to gate.

Do I need to host anything?

No. Deliverability Doctor runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.

Is the Deliverability Doctor 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.