Free cold email domain health check

Know when your cold email is dying

Check SPF, DKIM, DMARC, MX and blacklists for your sending domains, with plain-English fixes. Paid plans add daily monitoring with a dashboard and alerts.

Free. No signup. Reads public DNS records only.

Campaign healthExample preview
mail.acme.com
Reply rate2.1%
Bounce rate6.4%
go.northwind.io
Reply rate4.8%
Bounce rate2.9%
hello.brightly.co
Reply rate7.9%
Bounce rate0.8%
send.pipeline.dev
Reply rate8.3%
Bounce rate0.6%
Reply rate dropped 41% on mail.acme.comPossible spam placement. Pause sending and check DMARC.
Sample alert
Bounce rate up to 2.9% on go.northwind.ioClean the list before the next send.
Sample alert
SPF record changed on send.pipeline.devVerified, still passing.
Sample alert

SPF, DKIM, DMARC

The three records Gmail and Outlook use to decide if your mail is really from you.

Blacklist lookup

Checks your domain against public domain blocklists such as Spamhaus DBL and SURBL.

Plain-English fixes

Every problem comes with what to change, so you can fix it without a deliverability consultant.

Example result

Plain-English results in seconds

Every check comes with a status and a fix you can act on today. This is a sample of what a result looks like, not a real customer's domain.

example.org: grade B

Sample result

SPFPass

Valid record with 4 DNS lookups.

DMARCNeeds attention

Policy is p=none.

How to fix: Move to p=quarantine once reports look clean.

BlacklistsPass

Not listed on the checked blocklists.

Questions

Is the domain checker really free?

Yes. No signup and no card. It reads public DNS records for your domain and shows what to fix.

Does it test inbox placement?

No. It checks your setup: SPF, DKIM, DMARC, MX and domain blocklists. It can't tell you which folder an email lands in.

Are monitoring and alerts live?

Daily monitoring is live: paying members add their domains to a dashboard, we re-check them every day and flag regressions there. Email delivery of alerts and the Monday health report is still rolling out. The dashboard above is an example preview. Early-bird pricing is locked in for as long as you stay subscribed.

Why can't it find my DKIM key?

DKIM keys live under a selector name that only you know. We try common selectors, so a custom one can be missed.

Can I cancel any time?

Yes. Cancel and you won't be billed again.

Want ongoing monitoring?

Daily monitoring is live. Lock in early-bird pricing while it lasts.

See early-bird pricing