Blog
Deep dives on email authentication, deliverability, and the evolving threat landscape from the Authex team.
Why Every Domain Needs DMARC in 2026
With Google and Yahoo enforcing DMARC for bulk senders and PCI DSS 4.0 mandating email authentication, the question is no longer whether you need DMARC - it is how quickly you can deploy it. We break down the regulatory landscape, the real cost of email spoofing, and why waiting is no longer an option for organizations of any size.
Full article coming soonUnderstanding SPF Flattening: The 10-Lookup Limit Problem
SPF records are limited to 10 DNS lookups. For organizations using multiple SaaS tools that send email on their behalf, this limit is surprisingly easy to hit. When you exceed it, SPF fails silently and legitimate mail starts getting rejected. Learn how SPF flattening works, why manual flattening is fragile, and how automated solutions keep your record within limits as upstream providers change their IP ranges.
Full article coming soonGoogle & Yahoo's Bulk Sender Requirements: What Changed
In February 2024, Google and Yahoo began enforcing new requirements for anyone sending more than 5,000 messages per day. DMARC alignment, one-click unsubscribe, and low spam complaint rates are now table stakes. We walk through exactly what changed, how to verify compliance, and the common pitfalls that still trip up even well-configured domains a year after the deadline.
Full article coming soonBIMI: How to Get Your Logo in Email Inboxes
Brand Indicators for Message Identification (BIMI) lets you display your verified brand logo next to your emails in supporting clients like Apple Mail and Gmail. But setting it up requires a valid DMARC policy at enforcement, a Verified Mark Certificate, and a properly formatted SVG logo. Here is the complete guide to getting your brand visible in every inbox.
Full article coming soonMore articles coming soon. Follow us on X for updates.
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