The role Netlify plays
Netlify commonly controls static and server-rendered deploys, functions, forms, redirects, and domains. Its surrounding reliability depends on publish folders, build images, function boundaries, redirects, and environment scope, so the visible error may originate outside the file the AI last changed.
Specific failure patterns to inspect
For Website Form Not Sending, common causes include front-end-only mock, missing handler, mail authentication, validation or CORS failure. Generated implementations also tend to omit defensive error handling, version checks, idempotency, or a safe difference between public configuration and private credentials.
A safer diagnostic sequence
Preserve the current branch and exact error. Then submit a harmless test; check spam and routing; capture the network response. Follow one test request across the interface, server or provider, and durable data rather than making several speculative code changes.
Repair boundaries
The repair should change the narrowest contract that is actually broken. Broader refactoring is justified only when duplicated ownership or an unsafe architecture would otherwise let the failure return.
What to avoid
Do not repeat customer tests with sensitive data or publish mail credentials in client code. Do not upgrade the entire Netlify stack during a contained incident unless version incompatibility is the proven cause.
What a complete handoff includes
The handoff identifies the root cause, affected code or settings, safe test case, deployment note, and any remaining follow-up. The repaired behavior should be protected by a repeatable check.