Domain check
A plain-English report on the records that decide whether your mail is trusted, with the exact fix for anything missing.
Check a domain →
SpamCatcher.dad
Private pilot
Email protection with a little dad sense
Free checks, ongoing monitoring and private addresses: everything a small business or its IT provider needs to keep email trusted, explained in plain English.
Free · no sign-up
Check any domain's SPF, DKIM and DMARC records in seconds and get fixes you can paste.
Public DNS lookups only. We don't keep a list of the domains you check.
Start here
No account needed. Find out where your domain stands and how to fix it.
A plain-English report on the records that decide whether your mail is trusted, with the exact fix for anything missing.
Check a domain →Step-by-step instructions for Google Workspace, Microsoft 365, popular mail services and DNS hosts.
Browse the guides →Products
Monitoring for your domain, privacy for your inbox, and more on the way.
See everyone sending email as your domain. Fix the services that fail, catch spoofing, and move to a strict policy safely, with alerts when something changes.
From $9 a month · opens after our private beta →Give every website its own address. Clean mail reaches your inbox, suspicious mail waits for you, and your real address stays private.
Private pilot · invitation onlyDaily checks for blocklists, expiring domains and certificates, and unexpected DNS changes, with a note only when something needs you.
In developmentWho it's for
Stop strangers sending mail in your name and make sure customers get your invoices, without learning the jargon first.
Monitor every client domain from one account, group them by client, and send reports with your own name on them.
We're in private beta. Accounts are by invitation for now.