route_error - Email SDK

Every attempted adapter route failed without producing a successful normalized result.

EmailRouteError has code route_error and an ordered failures: readonly EmailAdapterError[] array.

The array contains every terminal adapter failure reached by the route. Unknown delivery may stop the route before later configured adapters are attempted.

src/send.ts

if (error instanceof EmailRouteError) {
  for (const failure of error.failures) {
    console.error(failure.adapter, failure.delivery, failure.status);
  }
}

The error cause is the final failure in the array. Preserve ordering in diagnostics because it explains primary, retry, and fallback decisions.