Domain Deliverability Checker

Created By

mammalabsdeva day ago

Checks email domain deliverability via DNS: SPF, DKIM, DMARC, MX record validation, DNSBL blacklist lookup across 10 lists, RDAP/SOA domain age, and a weighted 0-100 composite score. Built for Clay, GTM, and outbound workflows.

# email

# deliverability

Overview Content Tools Comments

Overview

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

Server Config

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

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