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Unbeatable engagement

Get 100% reach, a 98% open rate, and a 90% read rate on a channel customers already use! 

Best-in-class deliverability

With 600+ direct carrier connections, 100% platform uptime, and the lowest latency out there, we ensure quick and reliable SMS delivery, anywhere! 

Limitless global scalability

Expand your reach to new markets with ease. We ensure your SMS communications are compliant and secure, wherever you're sending to. 

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curl -X POST \
     -H "Authorization: Bearer {token}" \
     -H "Content-Type: application/json"  -d '
          "from": "12345",
          "to": [
          "body": "Hi there! How are you?"
      }' \

Integrate SMS in no time

Create an account and start building in minutes! Easy integration and expert documentation make it simple to use our SMS API to boost your business.  

There’s no credit card needed — just sign up, get a virtual test number, and start testing for free! Our APIs and SDKs are waiting for you, with documentation available for Java, PHP, Node, .NET Core, and REST API! 

infographic showing 3.5 million alerts sent using Sinch each month
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1 minute ago

Brick Bank Fraud Alert: Did you just try to pay $500.00 @VST with Visa credit card ending in 3467? Reply Yes to confirm or No to report fraud. 


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Thank you for verifying your activity. Your card is available for continued use. To Opt Out reply STOP.

Try our comprehensive SMS API!

Need to send alerts, pin codes, reminders, promotions, or other transactional messages? Whatever the situation, our global SMS messaging service offers just the right option and ensures you're relevant and timely.   

No matter your needs, we'll have you send your first SMS in no time! 

Never worry about bill-shock again. Our transparent, flexible, and competitive pricing ensures a surprise-free sending experience. 

1 and 2-way SMS

We support all your SMS communication use cases, whether you need one-way notifications or two-way conversational messaging. 

Smart routing 

Our smart routing engine prioritizes for cost and speed of message delivery to suit your needs. 

Local numbers

Get access to a secure, carefully-tested inventory of virtual local numbers and short codes.   

Delivery and performance reports

Make data-driven decisions with hands-on, detailed reports on message delivery, service performance, and user engagement.  

Phone number lookup

Verify phone numbers to reduce undelivered messages, increase security, and stay compliant.

Message scheduling and expiry

Schedule message deliveries and set message validity periods – such as expiry dates – for time-sensitive messages. 

Opt-in and opt-out support

Stay compliant and keep users happy by letting them opt in and out effortlessly. 

Brand customization

Use your brand as the sender name for messages and include landing page URLs to drive traffic to your website.  

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Number masking

Mask phone numbers to protect user privacy upon request. 

Message automation

Easily automate message sending based on triggers, user actions, or schedules. 

Regulatory guidelines

Access country-specific and regulatory guidelines through a user-friendly dashboard. 

SMS fallback

Failover to SMS when other communication channels fail and ensure critical messages always get delivered. 

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Got questions about SMS? We've got answers!

  • What is an SMS API?

    A cloud-based SMS service is provided to clients on demand over the internet from the cloud computing provider’s servers (hardware). So, there’s no need for the client to have their own on-premises servers to host and run the software, making for greater ease of use.

  • How can my business start sending global SMS quickly and reliably?

    It's easy! Sinch can help you set it up, and our technical support team is here for you every step of the way. 

    Increasing engagement through a medium that never leaves your customers' side is just as simple. With open rates of over 90%, SMS messaging makes sure that offers, invites, reminders, and notifications are delivered and acted on.

  • How do I receive SMS message replies?

    You’ll need to purchase an inbound SMS number to receive replies. If you already have a Sinch SMS account, please contact customer support or your Account Manager, and we'll help you get this sorted.

  • Why is SMS delivery time important?

    For text messages that need to be delivered immediately, you need an SMS service with low latency. Two-factor authentication, banking, or ticketing applications are just some examples of messages where instant delivery is essential to the end user. 

    How do I know if my messages were delivered? 

    For every SMS or MMS sent with Sinch’s REST API, we receive information about the message delivery status from the message carriers. This information is then made available to you in our delivery reports for easy analysis and strategy adjustment. 

  • Can I send text messages internationally to multiple countries at a time?

    Yes, you can! Just make sure that you're using the right country codes when uploading international numbers so that they're routed correctly.

    Please be aware that because messages are charged per network and destination, costs may vary on messages sent internationally. 

Notifications and alerts

Deliver critical information, delivery updates, or appointment reminders customers will see instantly. 

Customer care

Transform customer service by providing quick, helpful support on a convenient channel.  

Conversational engagement

Enable meaningful, real-time conversations that deepen relationships with customers. 

Identity and verification

Deliver SMS one-time passcodes quickly and reliably to verify users seamlessly. 

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Level up your customer experience and set your brand apart with rich, compelling messages!


Rich Media, guided responses, and an app-like experience, all in the users SMS inbox.


Set up quickly, build trust, and get high delivery rates? You can do it all with 10DLC!

Toll-Free Numbers

A toll-free SMS number inspires trust & confidence on the receiving end. Sinch toll-free texting makes it easy to engage with more customers!

Short Codes

In a messaging campaign your number represents your brand, so why not make it recognizable? Short and sweet!
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What are you waiting for? Send a SMS in 5 minutes or less

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Try out Sinch now - for free!

No credit card needed
Send free test messages
Easy integration with Sinch API
Access your API credentials and manage your settings and configuration