The Silent Failures: Why Deep Links Break in Production and How to Debug Them

Deep links appear straightforward in demos but fail silently when three critical systems—domain verification, native configuration, and Flutter routing—aren't perfectly synchronized. These failures directly impact customer experience in email campaigns, SMS, and push notifications, making them a production-critical feature. This checklist-driven approach transforms deep linking from a source of frustrating platform-specific bugs into a reliable, repeatable cross-platform system.