Function checkEmailProvider

apps/api/src/config/env/validate.ts:463–501

(env: Env)

};

const checkEmailProvider = (env: Env): string[] => {
  if (env.NODE_ENV !== "production") {
    return [];
  }

  // Cloudflare Email Service needs an account-scoped endpoint AND a token.
  if (env.EMAIL_PROVIDER === "cloudflare") {
    if (
      env.CLOUDFLARE_ACCOUNT_ID === "" ||
      env.CLOUDFLARE_EMAIL_API_TOKEN === ""
    ) {
      return [
        "Email provider 'cloudflare' requires both CLOUDFLARE_ACCOUNT_ID and CLOUDFLARE_EMAIL_API_TOKEN",
      ];
    }

    return checkEmailFromDomain(env);
  }

  // SMTP just needs a host; auth is optional (Mailpit accepts any).
  if (env.EMAIL_PROVIDER === "smtp") {
    return env.SMTP_HOST === ""
      ? ["Email provider 'smtp' requires SMTP_HOST"]
      : checkEmailFromDomain(env);
  }

  const keyByProvider: Record<"resend" | "sendgrid", string> = {
    resend: env.RESEND_API_KEY,
    sendgrid: env.SENDGRID_API_KEY,
  };

  if (keyByProvider[env.EMAIL_PROVIDER] === "") {
    return [
      `Email provider '${env.EMAIL_PROVIDER}' selected but its API key is missing`,
    ];
  }

  return checkEmailFromDomain(env);
};

const checkEmailFromDomain = (env: Env): string[] => {
  if (!isPlaceholderFromAddress(env.EMAIL_FROM)) {