Industry compliance and email authentication requirements (FINRA, HIPAA, GDPR, PCI)
Understand industry-compliant email authentication and how you can translate mailbox-level risks to audit-ready controls.
Email authentication trends to watch in 2027 and beyond
DMARC enforcement is becoming a baseline expectation. Here’s what email authentication will require from your organization by 2027.
DNS PTR record: What it is and how it works
A PTR record maps an IP address to a domain name for reverse DNS lookup. Learn what PTR records are, how to check one, and why they matter for email.
Build custom reports with the new DMARC report builder
Build custom DMARC reports tailored to your organization’s needs. The new Valimail Report Builder helps security and email teams analyze data, spot trends, and monitor authentication performance.
DMARCbis to DMARC: Spec updates and new RFCs
Learn what the new DMARC RFCs mean, including DNS tree walk support, reporting changes, and updates to replacing DMARCbis.
Why Gmail is rejecting your emails (and how to fix it)
Gmail is actively deferring and rejecting email that fails authentication. Here’s what Google requires, what changed, and how to stay compliant.
How email authentication impacts deliverability and campaign performance
Stronger email authentication boosts inbox placement, protects domain reputation, and drives higher opens, clicks, and revenue from every campaign.
DKIM2: What email senders need to know
DKIM2 is coming: A proposed update to email authentication that tackles replay attacks, backscatter, and broken signatures to strengthen modern email security.
Enterprise email authentication at global scale: Navigating compliance and complexity
Global enterprise email authentication at scale: Manage multi-domain complexity with centralized SPF, DKIM, and DMARC governance at scale.
Domain reputation check: how to check and improve your score
Your domain reputation determines inbox placement. Learn how to check your domain reputation score, what impacts it, and how to improve it.
Yahoo blocking emails: How to fix “sender is unauthenticated”
Is Yahoo blocking emails from your domain? This usually means missing SPF or DKIM authentication. Here’s how to fix it and get your emails delivered.
One-click unsubscribe: What it is, how it works & compliance
Google, Yahoo, and Microsoft require one-click unsubscribe for bulk senders. Learn what RFC 8058 requires and how to implement the List-Unsubscribe header.