Deliverability Doctor

Last 30 days

Uptime

100%

Response time

122 ms typical, 122 ms slowest 5%

Last check

5 h ago

Next check

in 1 h

How to call it

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "deliverability-doctor": {
      "type": "http",
      "url": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
    }
  }
}

2 tools

• 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 policy and reporting, MX, and DKIM at common selectors. Returns a graded report with concrete fixes. Accepts a bare domain, a URL, or an ema

• 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 competitors.

Security scan

• No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks