Function validateEmailSyntax

apps/sim/lib/messaging/email/validation.ts:44–48

* Validates email syntax using RFC 5322 compliant regex

(email: string)

 * Validates email syntax using RFC 5322 compliant regex
 */
function validateEmailSyntax(email: string): boolean {
  const emailRegex =
    /^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/
  return emailRegex.test(email) && email.length <= 254
}

/**
 * Checks if email is from a known disposable email provider