Cold Email Sending Strategies: Building Email Reputation for New Domains
New domains or IPs face reputation challenges when sending emails. This article covers cold start strategies to quickly build email sending reputation.
Email SPF/DKIM/DMARC Configuration: Improving Email Deliverability and Security
SPF, DKIM, and DMARC are the three core email authentication protocols. This article explains their principles and configuration methods in detail.
Email Deliverability Optimization Guide: SPF/DKIM/DMARC Configuration
Email deliverability affects whether your emails reach the inbox. This article details SPF, DKIM, and DMARC authentication configuration.
The New DMARC Standard: RFC 9989/9990/9991 Are Here
In May 2026, the IETF published the new DMARC standard RFC 9989/9990/9991, replacing RFC 7489. Core logic is unchanged, but np/psd tags are added and pct/rf/ri retired — senders should audit SPF/DKIM alignment now.