Communications infrastructure

Reach anyone, in any industry — at a 99.9% delivery rate.

SMS, RCS, WhatsApp, email, voice, and verification on one platform. Routing, compliance, and fraud prevention are built in — so every message you send actually lands.

Try for free → Talk to an expert

200,000+businesses served

600+operator connections

700B+messages / year

# one call, every channel
POST /v1/messages
{
  "to": "+1 415 ••• ••42",
  "channel": "sms",
  "body": "Your code is 4471"
}

202 Delivered latency 0.4s

99.9%

Powering conversations for teams of every size

Northwind Lumen&Co Vantage Kestrel Marigold Orbit Air Fjord Beacon

One platform, every channel

Meet your customers wherever they already are

Start with a single API and add channels as you grow. Same reliability, same dashboard, one invoice.

SMS & MMS

Global, two-way text with 600+ direct operator connections and carrier-grade routing.

Explore SMS →

RCS for Business

Branded, verified messages with carousels, buttons, and read receipts — inside the native inbox.

Explore RCS →

WhatsApp Business

Rich, conversational commerce on the world's most-used chat app, with template management built in.

Explore WhatsApp →

Email

Transactional and marketing email built for inbox placement, with validation and deep analytics.

Explore Email →

Voice & SIP

Programmable calling, IVR, and elastic SIP trunking on a tier-1 global voice network.

Explore Voice →

Verification

One-tap and OTP verification across SMS, flash call, and silent auth to stop fraud at signup.

Explore Verification →

For builders

APIs your developers will actually enjoy

Clean REST endpoints, first-class SDKs, and webhooks that fire in real time. Send your first message in minutes and scale to billions without re-architecting.

SDKs for Node, Python, Go, Java, and PHP
Sandbox keys with no credit card required
99.99% platform uptime backed by SLA
Delivery receipts and analytics out of the box

View the APIs →

// send.js
import { Sinch } from "@sinch/sdk"

const sinch = new Sinch(process.env.KEY)

await sinch.messages.send({
  to: "+44 7•• •••321",
  channel: "whatsapp",
  body: "Order shipped 🚚"
})
// → { status: "delivered" }

Northwind Bank ✓
Your statement is ready. Tap to view or manage alerts.

View statementManage

Track my order

Out for delivery — arriving by 5 PM 📦

For teams

No-code apps for marketers and support

Build campaigns, chatbots, and support flows in a friendly dashboard — no engineering tickets required. The same reliable network powers every send.

Drag-and-drop campaign and journey builder
Visual chatbot studio with AI intents
Shared inbox for two-way conversations
Segments, A/B tests, and live reporting

See solutions →

The network behind the network

Reliability you can put a number on

Direct carrier relationships and intelligent routing mean fewer hops, lower latency, and a delivery rate that holds no matter what you send.

99.9%Average delivery rate

600+Direct operator connects

100B+Calls completed / year

160M+Active phone numbers

What you can build

From one-time codes to full campaigns

✦

Marketing

Launch campaigns across SMS, RCS, and email that convert — with the deliverability to match.

◈

Notifications

Send alerts, receipts, and reminders that reach customers the moment they matter.

◇

Verification

Protect signups and logins with OTP and silent authentication that stops fraud.

❉

Customer care

Answer on any channel with a shared inbox and AI assist that keeps replies fast.

Customer story

"We moved every channel onto Sinch and watched our delivery climb past 99%. Support tickets about 'missing' messages basically disappeared."

Priya Nair — VP Engineering, Kestrel Logistics

Let's talk possibilities

Start sending in minutes, or talk it through first.

Spin up a free account and send your first message today — or book time with an expert to map your use case.

Try for free → Talk to an expert