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Email Security API

Validate SPF, DKIM, DMARC, BIMI, and MTA-STS across all your sending domains. Get letter-grade scores and fix-it recommendations to prevent spoofing and improve inbox placement.

What you can do

Real outcomes teams achieve with Email Security

SPF Validation

Parse and validate SPF records including DNS lookup counting, mechanism analysis, and policy evaluation to prevent exceeding the 10-lookup limit.

DKIM Discovery

Automatically discover and validate DKIM keys across common selectors, with key strength analysis and configuration recommendations.

DMARC Policy Check

Verify DMARC policy configuration, reporting addresses, and alignment requirements to ensure proper enforcement.

Email Security Scoring

Get an overall email security grade (A-F) combining SPF, DKIM, DMARC, and MX health into actionable scores.

Simple Integration

Get started in minutes with our RESTful API, or connect via MCP and let your AI call these endpoints directly. Clean documentation, predictable responses, and comprehensive error handling.

  • RESTful JSON API
  • Global edge-delivered responses
  • Comprehensive documentation
  • 99.9% uptime target
  • MCP-compatible — use with Claude, ChatGPT, or Gemini
Check email authentication
const headers = { 'Authorization': 'Bearer YOUR_API_KEY' };

const [spf, dkim, dmarc, score] = await Promise.all([
  fetch('https://api.edgedns.dev/v1/security/spf?domain=example.com', { headers }),
  fetch('https://api.edgedns.dev/v1/security/dkim?domain=example.com', { headers }),
  fetch('https://api.edgedns.dev/v1/security/dmarc?domain=example.com', { headers }),
  fetch('https://api.edgedns.dev/v1/score/email?domain=example.com', { headers }),
].map(r => r.then(res => res.json())));

if (score.data.grade !== 'A') {
  console.log('Issues found:', score.data.recommendations);
}

Put Email Security to work — via API or AI

Start free with 200 requests/month. Call the API directly or connect your AI through MCP. Upgrade to Pro when you need private monitoring and higher limits.

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