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 Bounce Reason Analysis: Identifying and Solving Email Delivery Issues
Email bounces are a major cause of deliverability issues. This article systematically analyzes the causes, identification methods, and solutions for various types of email bounces.
Email List Management Best Practices: Building a High-Quality Subscriber Pool
Email list quality directly impacts deliverability and marketing effectiveness. This article covers best practices for acquiring, managing, and maintaining email lists.
SendGrid vs Mailgun vs Resend: 2026 Email Service Deep Comparison
SendGrid, Mailgun, and Resend are popular developer email services. This article compares pricing, deliverability, API experience, and features.
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.
BIMI Explained: Inbox Logos and Brand Trust
BIMI is the reward for solid email authentication: once SPF/DKIM/DMARC are in place and enforced, Gmail, Apple Mail, and others can display your brand logo in the inbox. This article covers how BIMI works, the DMARC prerequisite, and the setup steps.