What is dmarc.io?

We created dmarc.io as a free, public DMARC resource that features a continually updated repository of DMARC sources. We built it to help the people doing the work of deploying DMARC understand which email infrastructures and services support DMARC compliance.

Purpose of dmarc.io

dmarc.io assists anyone dealing with DMARC by classifying sources into the following categories:

• Email sources – infrastructures that send email on behalf of other domains
• Email forwarders – services that impact email authentication and DMARC
• DMARC data providers – companies that generate DMARC reports
• Technology suppliers – companies that build and ship support for DMARC

How dmarc.io Is Used

• Domain owners and operators use dmarc.io to research email sending services and check their DMARC capabilities.
• It helps simplify DMARC deployment by surfacing actionable details about reporting, authentication and policy enforcement for email service providers.
• The resource supports a collaborative approach, allowing users to contribute updates and corrections about DMARC sources.

dmarc.io is especially useful during DMARC deployment, allowing domain owners and security teams to discover whether a new source of email supports DMARC and how it should be managed for compliance.

Check out dmarc.io and let us know if you have questions or ideas to improve it!

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