A free weekly email to help monitor & implement DMARC

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.

Need help?

Check out the FAQ page for immediate solutions to common problems. Bespoke support for our free tool is available to Postmark customers.