Sinch

Sinch (formerly CLX Communications) is a Swedish CPaaS provider headquartered in Stockholm and listed on Nasdaq Stockholm, with more than 4,000 employees across 60+ countries. It exposes programmable APIs for SMS, voice, email, video, verification and omnichannel messaging over WhatsApp, RCS and other channels, all routed through its global "Super Network" of direct mobile-operator interconnects. The platform powers billions of messages and calls a year for enterprise customers. Pricing is pay-as-you-go with volume discounts; published SMS rates start around USD 0.0079 per message.