Result handling

Every method returns a discriminated union; the SDK catches network, JSON, and HTTP errors internally:

type EmailSdkResult<T> =
  | { data: T; error: null }
  | { data: null; error: SdkError };

So no try/catch around SDK calls — check error and narrow:

const { data, error } = await client.send({
  /* … */
});

if (error) {
  // error.message is the API's message
  return;
}

data.id; // non-null here — TypeScript narrows after the early return

After if (error) returns or throws, data is non-null. Don’t add fallbacks for thrown SDK errors — they can’t happen.