Free tool
Free email domain checker.
Type a domain. MX, SPF, DKIM, DMARC, blacklists and domain age are checked the way a receiving mail server checks them, with what to fix. No signup.
The same checks run on every mailbox you connect to Fuzegenai.
SPF, DKIM, DMARC and MX are checked when a mailbox is connected and shown beside the account, so a broken record is caught before it costs replies. 14 days, no credit card.
What does the domain checker look at?
Six things a receiving mail server weighs before it trusts a sender: MX records, the SPF record and its all rule, a DKIM record on the selectors common providers use, the DMARC record and its policy, whether the domain's addresses sit on the Spamhaus or SpamCop blacklists, and how long ago the domain was registered. Each is marked pass, warn or fail with what to change.
Is this a domain authority score?
No. Domain authority is an SEO number about links to a website. It says nothing about email. The score here is Fuzegenai's own readiness score for sending cold email from the domain, worked out from the checks on the page. A high score means the domain is set up correctly, not that every email will reach the inbox.
Why does it say no DKIM record was found when I have one?
DKIM records live under a selector name chosen by your email provider, and there is no standard list. The checker probes the selectors used by Google Workspace, Microsoft 365, Zoho, Amazon SES, Mailgun, SendGrid, Postmark, Hostinger and Resend. A provider with its own selector name cannot be seen from outside, so a missing result is a warning, not a failure.
What does a new domain mean for cold email?
Mailbox providers treat a domain registered in the last few weeks with suspicion, because that is what throwaway spam domains look like. A new domain should be warmed up slowly before it carries outreach. The registration date comes from the public RDAP registry record.
Is the domain stored?
No. The lookups run and the result is returned. The domain is not saved, not logged and not sent to analytics.
Is there a limit?
Ten checks an hour from one network. The limit keeps the tool free and available. There is no signup and no email address is asked for.