Sinch Cloud Communications Platform

Sinch is a cloud communications platform (CPaaS) providing messaging, voice, video, and verification APIs for businesses to embed communications into their applications. Founded in 2008 in Stockholm, Sweden, Sinch has grown through acquisitions including Twilio's Value-Added Services (2021), Vidinoti (AR), and ACL Mobile (2020). Sinch is publicly traded on Nasdaq Stockholm (ticker: SINCH) and serves over 150,000 businesses including Google, Meta, Uber, and PayPal. Key features: SMS API: send and receive SMS messages globally through direct carrier connections. Transactional and marketing SMS. Delivery receipts and analytics. Global reach in 190+ countries. RCS (Rich Communication Services): next-generation messaging with rich media, suggested replies, and branding. Voice API: make and receive calls programmatically. IVR, call recording, conferencing, text-to-speech, and number masking. Global voice with local and toll-free numbers. Video API: embed 1-to-1 and group video calling. WebRTC-based with screen sharing and recording. Verification: phone number verification via SMS OTP, voice OTP, and flash call. Number lookup and validation. Fraud prevention with Silent Network Authentication (SNA). Conversational messaging: business messaging via WhatsApp, RCS, Facebook Messenger, Instagram, Viber, and SMS. Unified API for all channels. Conversation API: single API for multi-channel conversations. Send and receive messages across SMS, RCS, WhatsApp, Viber, and Facebook Messenger. Toll-free verification. Email API: transactional email delivery via Mailgun integration (acquired). Contact personalization. In-app calling SDK: embed voice and video calling in mobile apps. Chat layer. Number provisioning: local, national, toll-free, and short codes in 100+ countries. Dashboard: real-time analytics, delivery reports, and usage monitoring. Webhooks for event callbacks. REST API with SDKs. PHP/Go. Proprietary.