Products
Monitoring, alerting and analytics built on the same engine as our free tools.
Domain Health Monitoring
One score for everything that can go wrong with a domain — recomputed automatically, explained clearly.
From FreeBlacklist Monitoring
Know within minutes when your mail server or domain lands on a DNS blacklist — and when it comes off.
From FreeDNS Change Monitoring
Detect unexpected changes to NS, MX, A, SPF, DMARC and CAA records before they become an outage or a hijack.
From StarterUptime & SSL Monitoring
HTTP availability, response time and certificate expiry for every domain, from an independent location.
From StarterDMARC Analytics
Turn XML aggregate reports into a clear picture of who sends email as your domain — and whether it passes.
From StarterEmail Deliverability
SPF, DKIM, DMARC, BIMI, MTA-STS and TLS-RPT — checked, explained and generated.
From FreeExpiry Alerts
Domains and certificates never lapse again. Countdown alerts at 60, 30, 14, 7, 3 and 1 days.
From FreeAPI
Every tool as a JSON endpoint. Same engine, same results, automated.
From Starter