Yahoo and Gmail's February 2024 Bulk Sender Requirements: A Compliance Checklist
The complete compliance checklist for Yahoo and Gmail's February 2024 bulk sender requirements. Authentication, unsubscribe, complaint rates—what you actually need.
Authentication
Explore authentication technologies used in modern communication systems, including SPF, DKIM, DMARC, multi-factor authentication, OTP verification, sender authentication, passkeys, trust validation, and identity verification flows.
The ARC Header: How Forwarding Breaks DMARC and What You Can Do
Forwarders break DMARC by modifying messages in transit. ARC (RFC 8617) preserves authentication results across hops. How it works, who supports it, and the limits.
BIMI Explained: Is the VMC Investment Worth It for B2B Senders?
BIMI displays your logo in supporting inboxes. The VMC certificate costs $1,500/year. Whether the brand recognition lift justifies the spend honestly assessed.
Understanding DMARC Policies: From p=none to p=reject Without Breaking Things
How to move from DMARC p=none to p=reject without breaking production mail. The phased rollout that actually works with the failures most senders hit.