Overview
Sinch is one of the largest CPaaS providers by message volume globally, with particular strength in international SMS, RCS Business Messaging, and an expanding voice and video footprint. Through acquisitions (Pathwire/Mailgun, Inteliquent, MessageMedia, MailJet), Sinch now spans email, voice, messaging, and AI-driven engagement under one corporate roof.
Where Sinch is strong
- Among the largest global SMS providers by volume
- Strong early position in RCS Business Messaging
- Owns Inteliquent (US voice carrier) for direct voice termination
- Email (Mailgun, Mailjet) integrates into a unified comms stack
Where to be careful
- Acquired portfolio means product surfaces and consoles aren't fully unified
- Enterprise-led sales motion; less self-serve than Twilio or Plivo
- Pricing transparency varies by region and product
Best fit
Enterprises with global messaging volume who value carrier relationships, RCS readiness, and a single vendor across SMS, email, and voice.
Frequently asked
Does Sinch support RCS?
Yes. Sinch is one of the more active providers in RCS Business Messaging and supports the Google-driven RCS ecosystem in markets where it's available.
Is Sinch a US company?
Sinch is headquartered in Stockholm, Sweden, with significant US operations through its acquisition of Inteliquent.