Postmark

API Documentation
Guide
What’s DMARC?

A free tool to 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 digests, absolutely free.

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Your email address

Send reports about this domain

This service is provided for free from Postmark — a transactional email service for web apps.

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In order for us to send you email digests, you must set up a DMARC policy associated with your domain. This allows us to collect reports from the major ISPs about your DMARC alignment.

Add this TXT record to your domain’s DNS at DMARC.domain.com. with the following data:

v=DMARC1; p=none; pct=100; rua=mailto:randomhash+lv_96bXXQ9U@inbound.postmarkapp.com;
              sp=none; aspf=r;

We’re working on verifying your DNS record. This can take up to 24 hours, so we’ll send you an email when your DNS record is verified.

You can also use our Developer API to manage and retrieve reports with your API token below:

005d8431-b020

You're all set

You've successfully verified your DMARC DNS record for domain.com. A DMARC digest report will be sent to your email at email@domain.com every Monday morning.

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A free tool to monitor& implement DMARC

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A free tool to monitor
& implement DMARC