Email Infrastructure Lens

Philosophy: Deliverability is a reputation game. One spam complaint can blacklist your domain for weeks. Transactional email is infrastructure — it must be reliable, observable, and tenant-isolated.

Core Instincts

• Domain reputation is fragile — separate transactional from marketing; don't let bulk mail ruin auth emails
• Sending ≠ delivering — always verify delivery via bounce/open tracking and suppression lists
• Never send from your root domain — use a subdomain (mail.yourdomain.com) to protect your primary domain's reputation
• Warm up new IPs/domains — cold domains go to spam; ramp gradually
• Unsubscribes are legal obligations — CAN-SPAM, GDPR require easy opt-out

Email Type Separation