Domain Deliverability Checker

by mammalabsdev

284 downloads
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GitHub

About

Checks email domain deliverability via DNS: SPF, DKIM, DMARC, MX

Details

Author
mammalabsdev
Downloads
284
Categories
Other

- SPF, DKIM, and DMARC record validation
- MX record presence check
- DNSBL blacklist lookup across 10 major lists
- Domain age estimation via RDAP/SOA
- Weighted 0–100 composite deliverability score

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

  1. Download and install Highlight from highlightai.com/download
  2. Navigate to the plugins tab and select "Add Custom Plugin"
  3. Configure the plugin with the settings below
    Plugin Name Domain Deliverability Checker
    Command (node, npx, python, etc.)

    Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.

  4. Enable "Start Automatically" if you want the plugin to start when Highlight launches

From the repository

Install via npx: npx @mambalabsdev/mcp-domain-deliverability-checker. Invoke the tool check_domain_deliverability with a domain argument. No further configuration steps are described in the README.

check_domain_deliverability

Audit a domain's email deliverability and DNS health. Returns SPF, DKIM, and DMARC authentication with policy, MX records and mail provider, DNS blacklist status, catch-all detection, domain age, and a 0 to 100 health score as a flat, Clay-ready JSON row. Read-only; requires an APIFY_TOKEN and consumes Apify credits per call.

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "domain deliverability checker": {
            "domain-deliverability-checker": {
                "command": "npx",
                "args": [
                    "@mambalabsdev/mcp-domain-deliverability-checker"
                ]
            }
        }
    }
}

McpServers

{
    "domain-deliverability-checker": {
        "command": "npx",
        "args": [
            "@mambalabsdev/mcp-domain-deliverability-checker"
        ]
    }
}

Domain Deliverability Checker

Run DNS-based deliverability checks on any sending domain before you contact, enrich, or qualify it. Checks performed: - SPF, DKIM, DMARC record validation - MX record presence - DNSBL blacklist lookup across 10 major lists - Domain age via RDAP/SOA - Weighted 0-100 composite score Built for: Clay enrichment tables, GTM workflows, and outbound pre-qualification. Free-tier cap: 50 checks/month. Tool: check_domain_deliverability Install: npx @mambalabsdev/mcp-domain-deliverability-checker
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