SMS API
Reliable one-way and two-way text with sender-ID management, link tracking, and 600+ direct carrier routes.
Start free →Composable APIs for developers and ready-made apps for teams — sharing the same tier-1 network, the same compliance, and the same 99.9% delivery.
Mix and match. Every API returns real-time delivery receipts and shares one set of credentials.
Reliable one-way and two-way text with sender-ID management, link tracking, and 600+ direct carrier routes.
Start free →Verified sender profiles, rich cards, suggested replies, and read receipts inside the native inbox.
Start free →Template management, session messaging, and media support for conversational commerce at scale.
Start free →High-throughput transactional and marketing email engineered for inbox placement, with real-time events.
Start free →Programmable calls, text-to-speech, IVR, and elastic SIP trunking on a global tier-1 voice network.
Start free →OTP, flash-call, and silent network authentication to verify users and block fraud at signup.
Start free →Provision local, toll-free, and short-code numbers in 100+ countries through a single API.
Start free →One endpoint that fans out to every channel and falls back automatically when one is unavailable.
Start free →MMS, number lookup, campaign registry, and more. Tell us your use case and we'll route you.
Talk to an expert →Consistent REST design, idempotency keys, and webhooks you can trust. Test with sandbox credentials, then flip to production without changing a line.
curl https://api.sinch.com/v1/messages \
-H "Authorization: Bearer $KEY" \
-d '{ "to":"+61 4•• •••02",
"channel":"rcs",
"body":"Package delivered ✓" }'
HTTP/2 202
{ "status": "delivered",
"latency_ms": 380 }
Give non-technical teams the same network through friendly, purpose-built interfaces.
Campaign and journey builder for SMS, RCS, WhatsApp, and email — segments, A/B tests, and reporting included.
Design AI-assisted chatbots with a visual flow editor and hand-off to live agents when needed.
A shared inbox that unifies every channel so support can answer from one screen.
Free trial credits, no card required. Or talk to an expert about the right mix for your stack.