Get Free Visibility Across All of Your Domains

  • Identify 100% of your sending services by name
  • See where your passing and failing DMARC
  • Find unauthorized IPs, open routers, and more
  • No credit card required; it’s free (and always will be)

Start using Monitor for free!

Trusted by 92,000+ companies, both big
and small

Unmatched discovery of third-party sending services

Monitor instantly identifies thousands of sending services, making it easy to distinguish legitimate senders from bad actors, saving you the trouble of wading through IP addresses one by one.

Continuously monitor your enforcement status

Instantly find areas of vulnerability with detailed views into the enforcement status of all sending domains, including which domains are passing and failing DMARC, aligned SPF and DKIM, and overall disposition.

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Global view of suspicious IPs sending as you

Gain direct access to view unidentified ISPs, open routers, unsecured hacked servers, and more to keep you in control of your domains.

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