Domain monitoring

Continuous health checks for your sending domains: SPF, DKIM, DMARC, MX, A/AAAA, MTA-STS and DANE records, plus a live STARTTLS check on your mail server and domain- and IP-level scans across major DNSBL blocklist zones. We run a full check every 6 hours and email you the moment something breaks — a lapsed certificate, a dropped DMARC record, a fresh blocklisting.

Free for verified accounts — up to 3 monitored domains, with optional webhook delivery for your own alerting pipeline. Sign in to add a domain.