A technical specification created by a group of organizations that want to help reduce the potential for email-based abuse
https://www.dmarc.org
Email Hosting Providers · DMARC
Get access to data on 8,731,100 websites that are DMARC Customers. We know of 5,555,402 live websites using DMARC and an additional 3,175,698 sites that used DMARC historically and 2,106,224 websites in the United States.
Get a list of 8,731,100 websites using DMARC which includes location information, hosting data, contact details, 5,555,402 currently live websites and an additional 8,130,974 domains that redirect to sites in this list. 3,175,698 sites that used this technology previously and 2,106,224 websites in the United States currently using DMARC.
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