Fight email spoofing. A free tool to monitor and implement DMARC

What it does

Protect your brand from email scammers with more visibility into who’s sending emails using your domains. DMARC is a standard that prevents spammers from using your domain to send email without your permission — also known as spoofing. Learn why DMARC is important . We will process reports from major ISPs about your domain's DMARC alignment and turn them into beautiful, human-readable weekly email summaries, absolutely free. This service is provided for free from Postmark — an email service for web apps. Check out the FAQ page for immediate solutions to common problems. Bespoke support for our free tool is available to Postmark customers. In order for us to send you email…from dmarc.postmarkapp.com

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