sms.to (SmsTo Ltd., Paphos, Cyprus) is a cloud communications platform offering SMS and Viber messaging APIs. It enables businesses to send transactional and marketing messages via a REST API. Features include one-time password (OTP) delivery, bulk SMS campaigns, link tracking, and two-way messaging. Over 1,000 companies (e.g. Heineken, Bolt, ABInBev) use sms.to’s API for global messaging. The platform emphasizes reliability and scalable throughput, reaching customers worldwide.