EasyDMARC 2025 DMARC Adoption Report

The EasyDMARC 2025 DMARC Adoption Report provides definitive insight into how global DMARC trends, corporate policies, and national mandates are shaping email security. The report combines four comprehensive data sources:

• Analysis of phishing attack patterns across seven countries
• Comparative security postures
• Examination of DMARC implementation across the top 1.8 million domains globally of Fortune 500 and Inc. 5000 companies
• Insights from a survey of 980 IT professionals about phishing attack trends and DMARC implementation challenges.

This multi-faceted study examines how DMARC adoption and enforcement rates have evolved from 2023 to 2025, reveals the critical relationship between national DMARC policies and phishing attack success rates across seven countries, and tracks policy enforcement trends to demonstrate how government mandates directly impact email security outcomes.

Key Highlights

• Dramatic Global Growth: DMARC adoption among top domains increased from 27.2% to 47.7% between 2023 and 2025—a 75% surge in protected domains, with enforcement policies (quarantine + reject) growing by 50% during this period.
• Policy Impact Analysis: Countries with mandatory DMARC requirements show dramatically different phishing attack patterns. The US reduced successful phishing delivery from 69% to 14%, while countries without enforcement mandates like the Netherlands saw vulnerability increase to 97%.
• Enterprise Security Divide: Comparative analysis of Fortune 500 versus Inc. 5000 companies reveals significant disparities in DMARC implementation and enforcement policies, highlighting how organizational size and resources impact email security readiness.
• Survey Insights: Data from 980 IT professionals provides real-world perspectives on phishing attack frequency, implementation barriers, and the practical challenges organizations face when transitioning from monitoring to enforcement policies.
• Enforcement vs. Monitoring Gap: While 508,269 domains of the top 1.8 million use monitoring-only policies (p=none), only 350,513 domains have implemented active enforcement (quarantine/reject), revealing a critical protection gap that attackers continue to exploit.

Why This Matters

This report provides the first comprehensive analysis linking national DMARC policies to measurable security outcomes, while also revealing how enterprise size correlates with email security maturity. Organizations can use these insights to benchmark their email security posture against both global trends and peer companies, understand regional compliance requirements, and learn from the experiences of nearly 1,000 IT professionals who have navigated DMARC implementation challenges. The data clearly demonstrates that DMARC implementation alone isn’t enough; enforcement policies are essential for meaningful protection.