Email Security API

Use email security checks to inspect whether a domain has the DNS records needed to reduce spoofing and improve mail trust.

An active workspace API key and any Suite or Lookups plan are required. Each request consumes one shared lookup unit. See Authorization for limits and errors.

Endpoint

GET /email/security

Query Parameters

Parameter	Required	Description
domain	Yes	Domain to inspect.

Example

curl "https://api.requestguard.com/v1/email/security?domain=example.com" \
  -H "Authorization: Bearer rg_sk_live_..."

Response

{
  "domain": "example.com",
  "spf": {
    "found": true,
    "records": ["v=spf1 -all"]
  },
  "dkim": {
    "found": false,
    "selectors_checked": ["default", "google", "selector1", "selector2"],
    "records": []
  },
  "dmarc": {
    "found": true,
    "policy": "reject",
    "records": ["v=DMARC1; p=reject"]
  },
  "sources": [
    {
      "name": "DNS TXT lookup",
      "type": "dataset",
      "matched": true,
      "category": "dns"
    }
  ]
}

For user signup or checkout risk decisions, use Fraud Decisioning so email posture can be combined with IP, device, domain, and behavior signals.