Email Systems

Email might return $36 for every $1 spent, but most startups still blast everyone on the same shared IP and wonder why password resets land in spam. This walks you through the infrastructure decisions that actually matter: separating transactional from marketing sends, getting SPF/DKIM/DMARC records right before launch, processing bounce webhooks so dead addresses don't tank your reputation, and building preference centers that keep you legal. The React Email patterns and queue-based retry logic are solid starting points. If you're about to pick an email provider or debug why your open rates are dismal, the sharp edges section on authentication records and shared IP risks will save you weeks.

Install to Claude Code

npx -y skills add sickn33/antigravity-awesome-skills --skill email-systems --agent claude-code