Why this matters
Don't take our word for it
Outside reporting and our own research on why email authentication matters.
La PresseFeb 3, 2025
La Presse: two thirds of 410 Quebec domains can be impersonated by email
FBI · State Dept · NSAMay 4, 2024
NSA warns of North Korean hackers exploiting weak DMARC email policies
DMARC Guy studySep 30, 2026
59 of 100 Canadian News Media Domains Can Be Impersonated by Email
DMARC Guy studyAug 5, 2026
72% of Quebec Organizations Don't Block Email Impersonation
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Oct 5, 2026
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The New DMARC Standard Is Here. Most Domains Need to Change Nothing.
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We Mapped Where Spoofed Email Actually Comes From
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DMARCbis is official: what the new DMARC means for your domain
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Google tightens Gmail filters this month! November 2025
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Introducing “Insights”: A New Way to Understand Your Delivery Performance
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Risks Associated with Microsoft Direct Send
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Your Digital Footprint: A Hidden Gateway to Hacking and Spam
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Why DMARC Monitoring is important
Jun 10, 2025
Can Your Domain Be Spoofed? Most Can!
Apr 3, 2025
Microsoft's New Requirements for Bulk Senders, Effective May 5, 2025
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Would you hand a loaded gun to a stranger without asking what they’ll do with it?
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About this site & Why DMARC GUY
May 4, 2024