Welcome

DDMARC documentation.

Everything you need to set up DMARC monitoring, understand your email authentication, and integrate with the REST API.

Get started

5 min

DMARC setup

Configure DMARC records for your domain.

Reference

API reference

REST API + outbound webhooks for automation.

What is DMARC?

DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication protocol that protects your domain from unauthorized use. It works alongside SPF and DKIM to verify that emails are legitimately from your domain.

Publish

Add DMARC record to your DNS

Receive

Email servers check your policy

Report

Providers send aggregate reports

Analyze

Review and improve authentication

Why use DDMARC?

What DDMARC does that a mailbox full of XML cannot:

Create a free account2 domains, no card

Email authentication protocols

DMARC

Domain-based Message Authentication

SPF

Sender Policy Framework

DKIM

DomainKeys Identified Mail

MTA-STS

Mail Transfer Agent Strict Transport Security

BIMI

Brand Indicators for Message Identification

REST API + outbound webhooks.

Integrate DDMARC data into your applications and workflows.

View API docs

Example requestcurl

curl -X GET "https://api.ddmarc.com/api/v1/domains" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json"

150+

Endpoints

1k–25k/hour

Rate limit (per plan)

/api/v1

Base path

API access starts at Protect · Enterprise limits are custom · full table in the API reference