WHY SINCH

Most platforms are built on top of someone else’s infrastructure. Sinch is the infrastructure.

Sinch has been building its communications infrastructure for 25 years – the network, the compliance foundation, and native support across messaging, voice, and email. We give your business and AI agents what they need to scale critical communications across the globe.

  • Messaging, voice, email, and verification, in one platform

  • Direct carrier connections, compliance, and AI-readiness built in

  • Flexible AI paths: build with APIs, configure with Agent Builder, or deploy ready-made applications

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Image for Most platforms are built on top of someone else's infrastructure. Sinch is the infrastructure.
Join over 200,000 businesses, including 8 of the 10 largest tech companies in the world

Built to solve the toughest problems

900B+
Interactions annually | 99.99% uptime

Solve the scale and reliability problem with a trusted global provider. Our enterprise-grade infrastructure handles the world’s most demanding communication volumes without breaking a sweat.
600+
direct carrier connections

Skip the middlemen. Our direct Tier-1 connections (that route through 1-2 direct hops vs. 4-6 intermediaries) and ~12,800 interconnections means lower latency, higher deliverability, and better economics.
ISO 27001
& GDPR certified | Experts in 60+ countries

Get uncompromising security and compliance in every market you want to be in, with end-to-end encryption, and proactive, real-time blocking of fraudulent traffic built directly into the rails.
500+
Platform integrations

Seamlessly orchestrate across channels your business already runs on. Our unified ecosystem lets you plug directly into your existing systems (Salesforce, SAP, Temenos, HubSpot, and many more)

Trust & Compliance

Compliance isn’t just a feature – it’s in our foundation.

Fraud detection, identity verification, and regulatory compliance run at the infrastructure level – not as settings you configure per market or per channel. They’re on by default, everywhere Sinch operates.

Explore Sinch Trust Center
Image for Compliance isn't just a feature - it's in our foundation.

The Sinch difference

We’ve always been the infrastructure. The market is just catching up.

When a provider doesn’t own the network, they pass ownership to third parties – adding hops, cost, and distance from your customer. That means more failures when volume spikes, compliance gets complicated, or a channel drops at peak sending times.

Sinch built the communication infrastructure from the ground up to maintain control for our customers. The network, the carrier connections, and compliance needs are all in one place. And in the AI era, Sinch flexes to your needs however you want to build. 

Explore the infrastructure
Meet Sinch AI
The broadest Super Network

US Voice Leader

The voice network the largest U.S. carriers trust

Sinch owns and operates the largest and most powerful independent voice network in the U.S. – built for the carriers, service providers, and enterprises that can’t afford a voice call to fail. Our geo-redundant network ensures extensive reach, end-to-end control and visibility, secure connections, and the highest service quality.

Explore our Voice solutions
Image for The voice network the largest U.S. carriers trust
100GB
backbone for superior quality and reach
99.999%
uptime backed by our 43 geo-redundant points of presence across the U.S.
140M+
phone numbers powered by our network
300B+
minutes of use on our network annually
100B+
calls completed on average each year
95%
direct population coverage in North America

Wherever you are with AI, Sinch meets you there. 

Build

Bring your own AI and maintain full control over your stack. Use Sinch APIs (messaging, email, verification, voice) to connect AI agents to your CRMs, CDPs, and systems of record – with MCP, Skills, Functions, and Templates to customize how your agents work.
Explore Sinch APIs

Configure

Plug into your own AI or use ours. Add speed and structure to your existing AI stack and scale communications globally – without starting from zero. Get the same access to the same MCP, Skills, Functions, and Templates available as in Build, so you’re not trading flexibility for convenience.
Explore Sinch Skills

Activate

Move faster with tried and tested communications capabilities. Deploy ready-to-use applications in days, not months, with minimal engineering uplift. Out-of-the-box functionality for messaging, email, chatbot, and more – backed by 24/7 global support.
Explore All Applications

Sinch in production

What real enterprise teams are building with Sinch

Most enterprises use separate vendors to cover their customer engagement use cases. Sinch brings messaging, voice, and email onto one global communications infrastructure – so teams share the same delivery foundation, compliance coverage, and customer context across all of it.

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Marketing Campaigns

Run campaigns that adjust channel, timing, and content automatically based on how customers respond – without manual intervention between sends.

Explore Marketing Campaigns

Customer service

Keep conversation context intact when a customer moves from a chatbot to a human agent, or from one channel to another – so customers never have to repeat themselves.

Explore Customer Service

Customer updates

Send context-aware updates that stop automatically once a customer acknowledges them, reducing noise and inbound support volume at the same time.

Explore Customer Updates

Image for Identity & Verification
Identity & Verification

Assess risk in real time and route each verification attempt to the right method – OTP, Flash Call, or silent data check – based on the actual threat signal.

Explore Identity & Verification

What Sinch covers

Why teams consolidate every channel on Sinch

Sinch covers the full communications stack for messaging, voice and email at scale – from APIs your developers build on, to applications your teams deploy today. 

Messaging API

One API for 14 messaging channels: SMS, RCS, WhatsApp, Facebook Messenger, Viber, Instagram, and more, with automatic fallback, intent detection, and sentiment analysis inline. Our direct carrier connections handle routing and delivery globally.
Explore Messaging API

Voice API

Programmable voice with Voice Relay – connecting text-based AI agents directly to live phone calls – plus Call Streams for real-time audio and AI integration, and Branded Calling for verified caller identity. Available in 90+ countries.
Explore Voice API

Email API

High-volume email delivery via API – with real-time deliverability analytics, proactive reputation management, and 99.99% uptime. Trusted to send 700 billion+ emails per year.
Explore Email API

Verification API

OTP delivery across SMS, Flash Call, voice, and data verification – with AI-driven channel selection that matches the method to the actual risk level, and silent Data Verification for frictionless identity confirmation.
Explore Verification API

Numbers API

Line-type lookup, SIM swap detection, reassigned number database, and Number Verify (beta) for identity confirmation.
Explore Numbers API

Sinch Engage

A complete multichannel messaging platform that unifies SMS, RCS, WhatsApp, and more – with no-code integrations into HubSpot, Salesforce, Zoho, Shopify, and 500+ other tools. 
Explore Sinch Engage

Sinch Mailgun

A developer-first transactional and marketing email platform, with proactive deliverability tools, real-time analytics, and 99.99% uptime.
Explore Sinch Mailgun

Sinch Mailjet

Email marketing and automation for marketing and developer teams working together, with a visual editor, real-time collaboration, behavior-triggered workflows, and compliant infrastructure.
Explore Sinch Mailjet

How Nespresso transformed their mobile CRM strategy with Sinch RCS and expert support

“Thanks to the support of the Sinch and Google teams, we were able to transform a complex offering into an engaging conversational experience, aligned with our brand storytelling.“
2.3x
more customers completed the RCS experience than rich SMS
+11%
conversion rate with RCS vs. SMS
Arnaud Caillon Data CRM E-Business Director, Nespresso France
Read the customer story
How Nespresso increased conversion rates with RCS for Business

How Avtal increased recovery rates by more than 50% with SMS and email

“Sinch’s tech is really well built out, there’s a ton of documentation that makes it friendly for our engineering team. And then on the support side, we get amazingly quick responses.“
50-70%
Rise in recovery rates
7M
Monthly messages, scaling to 20M by EOY
Khaled Bittar CEO of Avtal
Read the customer story
How Avtal increased recovery rates by 50% with SMS and email

How Your Voice scales smarter conversations with Sinch’s APIs and infrastructure

“Our applications are running on Sinch’s gateways. Voice traffic, SMS traffic, soon email — they all flow in and out through Sinch.”
  • SMS API
  • Elastic SIP Trunking
  • IVR
Jayson Millson Co-founder and CEO of Your Voice Global Technologies
Read the customer story
How Your Voice powers custom contact center experiences

How EasyPark Group keeps millions of users informed with SMS and RCS

  • Verification APIs
  • SMS API
  • RCS
97%
delivery rate
Millions
of messages delivered
Read the customer story
How EasyPark Group keeps users informed with RCS

How Courir steps up sales with innovative mobile messaging

5x
increase in WhatsApp opt-ins
137%
ROI for RCS messages
Read the customer story
Learn how Courir achieved 137% ROI with RCS

How skincare brand Clarins increased engagement rates by 2.5x with RCS

  • Retail
  • Rich SMs
  • RCS
79%
read rate
3.5x
more redirections than Rich SMS campaigns
Read the customer story
The Secret Behind Clarins' 2.5x Engagement Boost

FAQ

Frequently asked questions about Sinch

Most communications platforms route messages through four to six intermediary providers before a message reaches a carrier. Each hop adds latency, increases the chance of failure, and distributes accountability across a chain no one fully owns. A direct carrier connection means Sinch routes at one to two hops – 600+ connections, no unnecessary intermediaries. When a message fails, there’s one place to look. When it needs to be traced, there’s nowhere to hide. 

Yes. Sinch holds SOC 2 Type II, ISO 27001, HIPAA, GDPR, STIR/SHAKEN, and 10DLC certifications. Compliance is enforced at the infrastructure layer – not configured on top of it. That means it applies consistently across every channel, every message, and every market, without additional setup per region or use case. 

Sinch carries compliance at the infrastructure layer by design. Fraud detection, identity verification, and regulatory requirements are enforced before they reach your team. Local regulatory expertise in 60+ countries means that when rules change in a specific market, that’s managed at the infrastructure layer – not left to your engineers to track and rebuild for. For regulated industries including healthcare and financial services, that distinction matters significantly. 

SMS, RCS, WhatsApp, voice, email, and verification are all native to Sinch – not third-party integrations added later. Sinch is also the only CPaaS provider with full U.S. Tier-1 RCS carrier coverage. That means one platform, one contract, and one infrastructure layer underneath every channel, with the same delivery reliability and compliance coverage across all of them. 

Sinch has direct coverage in 60+ countries across messaging, voice, and email, with local regulatory expertise in each. Voice coverage spans well beyond 25 countries – the channel-specific country count is available from our team for any market you’re evaluating. Unlike providers whose global coverage is US-anchored, Sinch’s network is built for the markets where your customers actually are. 

Sinch is the execution layer between AI agents and real customers. It handles global delivery, routing, compliance, and fraud prevention so agents can focus on the conversation rather than the infrastructure underneath it.

Sinch supports multi-agent, multi-model environments natively, connects to CRMs and CDPs to preserve context across interactions, and is compatible with Claude, the OpenAI Agents SDK, Cursor, Microsoft Azure AI Foundry, and any platform that supports the Model Context Protocol.

Learn more about Sinch AI
RCS is where conversational, rich-media messaging is heading – and Sinch is the only CPaaS provider with full U.S. Tier-1 RCS carrier coverage. For AI agents running live customer conversations, that means native support for interactive elements, verified sender identity, and the kind of two-way engagement that SMS was never designed for. Tier-1 coverage means Sinch routes RCS directly – not through an aggregator layer. 

Three things that are specific, verifiable, and hard to replicate. First, routing depth: Sinch connects at one to two hops, while aggregator-based providers route through four to six intermediaries by their own admission. Second, channel ownership: SMS, RCS, WhatsApp, voice, email, and verification are native to Sinch – not assembled from third-party providers. Third, heritage: Sinch has been building carrier-grade communications infrastructure for 25 years. The infrastructure story isn’t a 2026 repositioning. It’s what the company was built as. 

Yes. Sinch is built on the Model Context Protocol (MCP), an open standard supported by Claude, Cursor, the OpenAI Agents SDK, Microsoft Azure AI Foundry, and Copilot Studio. You can also bring your own models and agents and connect them directly to Sinch infrastructure via our APIs. No lock-in, no requirement to standardize on a single AI ecosystem.