MailGrade
Email and domain deliverability intelligence, from DNS. Deterministic, sub-300ms, and we never open an SMTP connection to anyone's mail server.
Check any domain
The API
GET /v1/verify | Score a single address: syntax, MX, disposable, role, typo correction, provider. |
|---|---|
POST /v1/verify/batch | Up to 100 addresses per call. |
GET /v1/domain | Full SPF / DKIM / DMARC / MTA-STS / DNSSEC audit with a grade and the fix for every finding. |
GET /v1/datasets | Freshness of the disposable-domain list. |
curl "https://www.mailgrade.dev/v1/verify?email=jane@gmial.com"
Browse reports
Live audits for 110 well-known domains, or type any domain above. See the full directory →
Why DNS-only
- No blocklist risk for you or us. SMTP probing hammers recipient servers and gets verification vendors blocked; we never do it.
- No stored recipient data. Addresses are scored in memory and discarded, so there is nothing to leak and nothing to subject-access.
- Deterministic. The same address returns the same score, with the evidence attached. No model, no sampling, no drift.