I run about 20 domains across my products, and email kept failing me in the most expensive way possible: silently. Campaigns showed delivered while landing in spam. We switched email providers and forgot one DNS record, reply rates collapsed, and we spent weeks blaming the copy. A tool we d stopped using was still authorized to send as one of our domains.
None of these show up as errors. You find them months later, after they ve cost you real money.
The existing DMARC tools are built for security teams and read like RFCs, so I built HealthCheck Email(healthcheckemail.com) for marketers and founders instead:
Enter a domain and get an A+ to F email health grade in seconds, covering DMARC, SPF, DKIM, MX, blacklists, and TLS
It parses the reports mailbox providers send about your domain, so you see every service actually sending as you, with names like Google Workspace and Klaviyo instead of IP addresses
A guided path from DMARC p=none to reject without blocking your own legitimate mail
Daily re-checks with alerts to email, Slack, or webhook the moment a record changes
Lindo AI
