Free domain check
Is your domain ready to send?
Six checks in about ten seconds, with the exact record to paste for anything that fails. No account needed.
- SPFWhich servers may send as you
- DKIMWhether your mail is signed
- DMARCWhat receivers do with fakes
- MXWhere replies are delivered
- Domain ageHow long it has existed
- BlocklistsWhether it's listed anywhere
Why it matters
Spam problems usually start in DNS.
- 2024
Gmail and Yahoo require it
Since February 2024, mail without SPF, DKIM and DMARC is filtered or refused.
- 10s
One pass, every record
Six checks at once, read straight from your domain's own DNS.
- 1
One line to paste per fix
Anything wrong comes with the exact record, ready for your DNS host.
New to cold email?
Read this before you send.
- SPFSPF is a list of the servers allowed to send mail from your domain. Receivers check it on every message.
- DKIMDKIM signs each message with a private key. Receivers check the signature against a public key you publish in DNS.
- DMARCDMARC tells receivers what to do when a message fails SPF and DKIM for your domain, and where to send reports.
- MXMX records tell the world which servers receive email for your domain. Without them, nobody can reply to you.