Email CSS compatibility remains archaic and extremely limited
7/10 HighEmail client CSS support is antiquated with very few styling possibilities available. This creates a major disconnect from modern web CSS and requires developers to use outdated techniques.
Sources
Collection History
Query: “What are the most common pain points with Resend for developers in 2025?”4/7/2026
HTML emails were painful to build and even more painful to keep consistent across Gmail, Outlook, Apple Mail, and friends.
Query: “What are the most common pain points with CSS for developers in 2025?”4/5/2026
Differences in Email Browser and still very low posibilites, very archaic part of this industry... E-mails! Horrible!
Created: 4/5/2026Updated: 4/7/2026