Free email tools. Answers in plain English.
Check a record in public DNS, build one from a few answers, or paste what a receiver sent you. Every answer is in plain words. Start with your own domain: what its DMARC record asks receivers to do.
Check a live record. Read from public DNS.
Type a domain. We read the record receivers would read, say what it asks them to do, and name what to fix first.
- DMARC auditSee any domain's policy and what to do next.Domain
- SPF testerWalk every include and count lookups.Domain
- DKIM verifierScan the common selectors for you.Domain, selector optional
- BIMI validatorCheck the record, logo and certificate.Domain
- MTA-STS validatorCheck the policy file against DNS.Domain
Build a record. Valid before you publish it.
Answer a few questions or pick your senders, then paste the result at your DNS host. The DKIM key is made in your browser and never sent to us.
Read what you were sent. Reports and headers.
Paste a DMARC report or a message's headers. We parse it and say what it means.
A check is a snapshot. Monitoring shows you what changes.
Add one domain free. We read the DMARC reports receivers send about it, name the senders we can, and tell you when something changes.