Overview
Email authentication check for a domain: the SPF record and its all-policy, DKIM keys at the common selectors, the DMARC record and policy, plus MX, MTA-STS, TLS-RPT and BIMI, with a 0-100 score, a grade and a list of fixes. Public DNS only; no mail is sent. Use to verify a sender domain's SPF, DKIM and DMARC setup, to debug mail landing in spam, or to vet a domain before trusting its mail.
Protocol
x402
Price
$0.01
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
Email auth check
Indexed
2026-11-10 17:07:30
Health
Status
unknown
Latency (p50)
—
Uptime (30d)
—
Reliability Score
—
Last Checked
Never
Last Healthy
Never
Consecutive Failures
0
Output Schema
{
"example": {
"address": null,
"bimi": false,
"dkimSelectors": [
"google"
],
"dmarc": "v=DMARC1; p=reject; …",
"dmarcPolicy": "reject",
"domain": "github.com",
"failed": {},
"grade": "A",
"issues": [
"no BIMI record"
],
"mtaSts": true,
"mx": [
{
"host": "aspmx.l.google.com",
"priority": 1
}
],
"pack": "email-deliverability",
"score": 90,
"spf": "v=spf1 ip4:… ~all",
"spfPolicy": "~all",
"tlsRpt": true
},
"type": "json"
}