DMARC policy options: What it is & how to reach enforcement
DMARC policies control what happens when emails fail authentication. Learn your policy options (none, quarantine, reject) and how to reach enforcement.
One-click unsubscribe: What it is, how it works & compliance
Google and Yahoo now require a one-click unsubscribe button for bulk senders. Here’s how it works, why it matters, and best practices for compliance.
DMARC percentage (pct) tag: what it does and how to use it
The DMARC pct tag controls what percentage of emails get checked against your policy. Learn what it does, why pct=0 is dangerous, and how to use it correctly.
DMARC fail? Here’s what it means and how to fix it
Struggling with a DMARC fail? Learn what it means when DMARC fails and discover practical steps to fix the issue and ensure your emails reach their destination.
Do I need to receive DMARC emails? Why they’re crucial
Why do I need to receive all these DMARC emails? Find out why your inbox is flooded with valuable DMARC reports and discover an easier way to parse through them.
SPF, DKIM, and DMARC made simple: An easy guide to email authentication
Learn the differences between SPF, DKIM, and DMARC — and why all three are essential to secure your domain and stop phishing.
What is a watering hole attack (and how to prevent it)
Learn everything you need to know about watering hole attacks to prevent them and protect your organization and its customers.
What is a whaling attack in cybersecurity and how to stop it
Learn the ins and outs of whaling attacks, how they work, who they tend to target, and best practices to prevent them.
DMARC failure reports: Everything you need to know in 2025
Explore the distinctions between DMARC failure and aggregate reports. Learn why aggregate reports are preferred for effective email authentication and security.
The best DMARC report analyzer tools in 2026
Discover the best DMARC report analyzer tools to help you monitor, interpret, and improve your domain’s email authentication and boost phishing protection.
Introducing the Valimail Domain Executive Report
Easily showcase email security progress with Valimail’s Domain Executive Report—track DMARC status, sender authentication, and threats in a shareable format.
What is a tailgating attack (and how to prevent it)
Explore real-life examples and preventive strategies to help you recognize and deter tailgating attacks from threatening your business, employees, and customers.