Flexible REST SMS API integration

Integrate SMS and MMS into your applications with our flexible API. Our REST SMS API allows seamless integration of SMS capabilities into your applications, whether you're launching a new app or enhancing an existing one.

Benefits of

Our REST SMS API empowers developers with ease of use, robustness, and scalability, enabling them to innovate with the speed and reliability of text messaging. Integrating our SMS API can enhance customer engagement, streamline communication processes, and fuel business growth.

  • Flexibility: Our API offers flexible integration options, ensuring it fits your app's needs.

  • Reliability: Trust in a robust API infrastructure that guarantees 100% SMS delivery to carriers.

  • Scalability: Scale your SMS capabilities. Add bulk SMS functionality to your application.

  • Customisation: Tailor the SMS experience to match your app's unique requirements.

Understanding REST API for SMS Services

A REST API or Representational State Transfer Application Programming Interface

A REST API is a set of rules and protocols that allows different software systems to communicate with each other and exchange data. In the context of SMS services, a REST API enables developers to integrate SMS functionality into their applications, websites, and software platforms.

The SMS REST API allows your company's developers to programmatically send, receive, and manage SMS messages for business purposes. By making HTTP requests to specific endpoints, developers can easily incorporate SMS capabilities into their projects, automating the process of sending and handling text messages.

Incoming SMS messages can be automatically forwarded to a server or application via the REST API, enabling real-time processing and responses. Forwarding SMS to a REST API opens up a world of possibilities, such as chatbots or automated support systems, enhancing customer engagement and satisfaction.

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Key features of Kudosity’s SMS Rest API

Get started with a few lines of code. Send, receive, and retrieve data with our documented libraries. With our APIs, sending an SMS or MMS takes just a few minutes. Retrieve your API key and copy a few lines of code to send and receive messages in your applications.

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Send text messages

Receive SMS responses

Format numbers for SMS delivery

Lease virtual numbers

Unsubscribe contacts

Receive real-time delivery reports

Add and remove lists

How to send SMS with REST API

Getting started with our SMS Gateway API takes just a few minutes. Retrieve your API key, copy a few lines of code, and start sending and receiving text messages within your new or existing applications.

Accessing your API Key

and secret

Sign up for a trial account to test our services, access your API key, and create an API secret.

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Choose your GET or

POST callbacks

Add SMS functionality into your service through our well documented parameters.

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Connect with


Create Webhooks to deliver SMS, retrieve Delivery Reports (DLR), message data and more.

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Why choose Kudosity?

Combine our simple user-friendly design with robust functionality for businesses of all sizes. Discover how our platform can enhance your customer engagement and increase your sales.

  • Dedicated account manager.

  • 24/7 global support.

  • Award-winning solutions.

  • Direct ON-NET connections.

  • ISO27001 and SOC 2 Type 1 Certified.

  • No contracts or commitments.

  • 100% Australian owned and managed.

  • Virtual mobile numbers.

Get started with Kudosity's REST SMS API today

Sign up for our SMS API today and build innovative solutions that drive results. Our SMS API is designed to be developer-friendly, with comprehensive documentation and support resources to ensure a smooth integration process.



Integrating our SMS API can enhance customer engagement, streamline communication processes, and drive business growth.

How do I get started with Kudosity's REST API?

To get started with our REST SMS API, sign up for a trial account. Once registered, navigate to settings for your API key and secret. Using these credentials, you can integrate SMS and MMS into your applications, follow the documentation on our Developer Portal.

What are the common use cases for Kudosity's APIs?

Customers often use our API to send transactional messages, marketing campaigns, appointment reminders, alerts and notifications, customer support, and Two-Way communications. Our APIs are versatile and can be used by various industries to enhance customer engagement and streamline communications.

How do I handle message delivery and error responses?

Our APIs provide delivery reports and error codes to help you track the status of your messages. Delivery reports indicate whether a message was successfully delivered to the recipient’s phone. Error codes help diagnose issues, such as invalid phone numbers or network problems. Our API documentation will detail how to handle these responses and implement error handling in your application.

How do I ensure compliance with regulations when using Kudosity’s APIs?

To comply with regulations such as GDPR and the CAN-SPAM Act, ensure you have obtained explicit consent from recipients to send them SMS messages. Include opt-out options in your messages and maintain accurate records of consents and preferences.

Can I send messages internationally with Kudosity's APIs?

Yes, our SMS APIs support international messaging, allowing you to send SMS messages to recipients in different countries. However, you need to be aware of international regulations and potential differences in costs.

You can talk to one of our experts to confirm our supported countries, requirements and pricing.

Success stories

Discover what a simple, well-crafted SMS campaign can do for your business.

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A true game changer. Their NLP solution was the most effective marketing tool we’ve ever used for lead qualification at Uber.

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Fast dedicated support. We love the local support and account management team. They're always very responsive to all our enquiries or ideas on how we can make the most of the platform.

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Our first Giving Day was a success in reaching our $1M target with a two-touchpoint journey and conversational AI. We even had a $10k donation come through from an SMS touchpoint.

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We started sending an SMS campaign only a month ago to 100,000+ customers and experienced a 20% increase in revenue, with increased site visits and conversions. We expect this to increase even further for Black Friday

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We just completed our first conversational AI SMS pilot, it was focused on re-engaging candidates across our database that we haven’t spoken to recently. We had amazing results, over 25% of people engaged in the conversation and around 5% of those we spoke to have now re-engaged.

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SMS works well with email as it has a higher open rate. Anything can happen on an event day too, so it’s also a great broadcast tool to have on hand because it’s so much quicker to prepare and send.

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We were looking for an efficient solution that allowed us to improve our ability to service our customers' needs. The implementation of Conversational Messaging did this and more; the results proved to be a game changer.

Over +15 direct integrations available

Integrate the Kudosity messaging platform with your existing software for improved user communication.