Looking for Sinch Engage? You’re now on Sinch’s main site. Go back to Sinch Engage

CREATE RICH CONVERSATIONS

Upgrade your messages with RCS via API

Send rich, branded messages that capture attention and build trust. Use RCS for Business through the Sinch Conversation API to engage customers on supported networks worldwide. 

Contact sales
Try for free
Image for Upgrade your messages with RCS via API

Why Sinch

Why top brands choose us for RCS via API 

Sinch helps you to send and scale RCS messages via API with the Sinch Conversation API. You’ll get branded, rich messages that convert — backed by global reach, message fallback, and robust analytics to keep improving results. 

Image for Why top brands choose us for RCS via API 

Boost engagement

Send branded, media-rich, interactive messages packed with app-like experiences that grab customers’ attention and keep them clicking.

Reduce fraud

Verified sender profiles add a layer of security that protects customers and keeps conversations trustworthy.

Optimize performance

Track campaigns and results in real time, prove ROI, and support fast launches, effortless scaling, and future-ready agility.
“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.“
15%
click-through rate with RCS (+4 points higher 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

RICH, INTERACTIVE EXPERIENCES

Turn basic texts into rich conversations

Move beyond plain SMS. Add images, videos, carousels, and interactive buttons, so customers engage longer and click more, driving higher conversion rates compared to SMS.

  • Images, videos, carousels, and quick replies

  • High open rates within minutes

  • Significantly higher click-through rates than SMS

Image for Turn basic texts into rich conversations

VERIFIED TRUST & SECURITY

Build instant credibility with every message

Show your logo and brand name so customers always know it’s you. Verified profiles build trust and help protect users from fraud.

  • Branded sender name and logo

  • Verified by select carriers or Google

  • Fraud-resistant customer experience

Image for Build instant credibility with every message

GLOBAL REACH & INSIGHTS

Reach anyone, anywhere with smart routing

Our global super network with smart routing delivers messages via Conversation API and automatically falls back to SMS or MMS when needed. Real-time analytics give insight into how you can optimize campaigns and prevent fraud.

  • Smart routing with fallback

  • Real-time delivery and read rates

  • Over 1 billion RCS messages are sent daily on Sinch’s global network

Image for Reach anyone, anywhere with smart routing

TOP USE CASES

See what’s possible with RCS via API

Teams use the RCS API to power branded messaging across industries, from retail promotions to banking alerts and appointment reminders.

Marketing campaigns

Send immersive shopping experiences, offers, and promotions right into the messaging inbox with images, carousels, and buttons that guide customers to purchase.

Customer updates

Keep customers in the loop with branded delivery updates and appointment reminders that cut down on no-shows.

Identity & verification

Send branded one-time passcodes and suggested actions that let users log in or confirm their identity in a single tap.

Customer service

Make it easy to book, reschedule, or chat. Combine interactive messages with AI-assisted support for faster resolutions and happier customers.

RCS Features

Everything you need to future-proof messaging with RCS 

Verified business profile

Show your logo and verified name (approved by select carriers and/or Google) to build instant trust and reduce fraud.

Rich & interactive media

Share photos, videos, product carousels, and suggested actions and replies right inside the conversation.

Secure messaging

Enterprise-grade security with encryption at rest and in transit keeps every conversation protected and secure.

Rich, app-like experiences

Let customers complete actions—like payments, forms, and viewing product pages—without leaving the chat.

AI & automation integration

Combine automation and live chat for smooth, intelligent customer experiences.

Connect

Meet your customers where they are. Conversations can be started from anywhere – links, QR codes, web pages and live in your customers’ native inbox.

Smart routing & fallback

Get global reach by automatically switching to MMS or SMS if RCS is not supported in a country or on a device.

API integrations

Easily plug in your CRM, e-commerce, and helpdesk systems—including Salesforce via our Omniconnector—through the Sinch Conversation API.

MORE FROM SINCH

Connect with every customer with RCS via API

RCS messaging with Sinch Engage

Craft personalized customer experiences using RCS messaging in Sinch Engage.
Learn more

RCS with Chatlayer

Build one chatbot to talk to customers across RCS, Messenger, and even voice channels.
Learn more

RCS with Verification API

Send branded one-time passcodes with the Sinch Verification API.
Learn more

Frequently asked questions

SMS is text-only and basic. RCS for Business lets you include rich media, branded messaging, verified profiles, and get enhanced security and advanced analytics.

Register your RCS Agent in Sinch Build or Provisioning API, then submit it for carrier or Google verification and approval, and then you can start sending with the Conversation API.  

Need help with submission? Our team can help. 

Talk to our experts

Sinch Build is the developer console and control plane for all Sinch APIs – Messaging, Voice, Verification, Numbers, SIP, and Fax – under one identity, one set of credentials, and one dashboard. It sits in front of every Sinch API, handling routing, compliance, and observability so you don’t have to build that infrastructure yourself.

Learn about the Sinch Build Dashboard

Sinch Build is for developers. It’s the console where you get API access and build messaging, voice, and verification into your own software. Sinch Engage is a ready-to-use messaging platform for SMS, RCS, and WhatsApp. It’s for marketing, service, and operations teams who want to send without code, or by connect messaging to their CRM or ERP. 

Explore Sinch Engage

Sinch APIs work with any tool that supports MCP or SKILL.md files, including Claude Code, Cursor, Gemini CLI, GitHub Copilot, Codex, and Windsurf. Add Sinch Skills so your assistant knows how Sinch’s APIs work, and connect the Docs MCP at developers.sinch.com/mcp so it writes code from the current API reference.

Prefer a plugin? Install one from the VS Code Marketplace, JetBrains Marketplace, Open VSX Registry, or Cursor Marketplace, or use the sinch-plugins GitHub repo for Claude Code and Gemini CLI. See setup steps for each plugin.

Start by signing up for Sinch Build and grabbing your access key and credentials. You can then take those details to your AI coding tool to continue building from there. 

Signup for a free Sinch Build account

RCS messages are protected with enterprise-grade encryption in transit and at rest.

Businesses using RCS see higher engagement, open rates, and conversion rates—often up to 80%. Customers prefer RCS for its richer, more trusted experience.

If a recipient’s device or network doesn’t support RCS, messages automatically switch to SMS or MMS to ensure reliable delivery.

Pricing is set by carriers and depends on message type. To learn more, talk to an expert today.

The Sinch developer blog has step-by-step builds, release notes, and agentic guides. For API reference and quickstarts, go to developers.sinch.com.