Free email deliverability test
Send us one email and we'll show you exactly how it authenticated, what a spam filter would make of it, and how to fix anything that needs it. No sign-up needed.
You'll get an address that works for one hour. Send it any email from the domain you want to test.
We read the email's headers and authentication, then throw the message away. We never keep its subject or content. If the sender's DMARC passes, we also email the report back, once per domain per day. Results are kept for 30 days. We test business domains, not Gmail or Outlook.com addresses.
What we check
- SPF, DKIM and DMARCWhether this email passed, and whether each one lines up with your From address.
- Encryption and reverse DNSWhether your server used TLS, and has a proper name for its IP address.
- HeadersMessage-ID, date, unsubscribe headers, a plain-text part and other things spam filters look at.
- BlacklistsWhether the server that sent it is on a blacklist.
- Your domain's gradeThe same nine checks as the free domain checker, graded A to F.
Only want to check a domain's records? Use the free domain checker.