Key Takeaways Custom workflows beat platform lock-in by giving you 100% data ownership, custom styling control, and zero platform fees. n8n Webhook CORS configuration is crucial when making client-side submissions; restricting origins in production prevents unauthorized cross-site mutations. Database defaults don't fire on upsert updates. When re-subscribing users, you must explicitly regenerate verification tokens in your workflow to avoid security vulnerabilities. Direct REST API requests to G