A solid foundation for email marketing design that covers the technical constraints most people learn the hard way. The 600px width rules, bulletproof button code, and subject line formulas are all battle-tested standards. What's practical here is the integration with inference.sh for generating header images on demand, which beats hunting for stock photos or waiting on designers. The inverted pyramid layout guidance and mobile optimization rules will save you from the common trap of designing emails that look great in your browser but break in Outlook or get mangled on mobile. Good reference for anyone building email campaigns, welcome sequences, or transactional templates.
npx skills add https://github.com/inferen-sh/skills --skill email-design