You can now use Amazon SNS to send SMS messages to phone numbers in 200+ countries. With the addition of the Worldwide SMS Delivery feature, Amazon SNS now offers a low cost, fully managed and highly scalable service that lets you deliver both transactional messages such as one-time passwords (OTP) and promotional messages such as marketing campaigns to your users across multiple destinations globally, over multiple channels such as text-messaging (SMS) mobile push, and email.