SMS API
Send and receive SMS or MMS globally with the Telnyx Messaging API, our award-winning platform recognized as a leader for its results and ease of use.
SMS messaging with confidence
Reach users at scale wherever they are in the world with SMS for marketing campaigns and triggered SMS alerts to keep them informed when it counts. Augment existing communications with AI chatbots—automating the most repetitive tasks to reduce operational strain—and engage in text conversations to solve customer problems faster.
Supported number types for SMS are long code including 10DLC, toll-free, alphanumeric sender ID and short code numbers.
SMS API with automated optimization and reporting
Whether it’s detailed, transparent delivery reports or automated delivery optimizations, our billion-scale Messaging API is built to take you from small to massive with ease.
Message queuing
Our automated message queuing is set based on your account limits and the latest industry standards, ensuring maximum throughput without compromising delivery or compliance.
Reliable delivery reports
Measure deliverability with greater transparency than the competition using our detailed reports and debugging tool.
Automatic opt-outs
If a customer replies to a message from the Telnyx API with a “stop word” message (e.g. STOP), Telnyx will automatically unsubscribe them from future sends.
Message concatenation
If a SMS is too long for its destination, our API will automatically separate it into two messages. No more breaking out content into parts—we’ll handle that for you.
Use existing numbers to send SMS
Have an existing, well-known number that you want to send SMS from? With Telnyx Hosted SMS, you can send and receive SMS and MMS without even changing providers.
Intelligent message encoding
We support any character set and language type. Our system automatically chooses the most compact encoding possible, minimizing cost per send.
BENEFITS
Developer-friendly, scalable SMS API
Among SMS API providers, Telnyx consistently wins awards for its results and ease-of-use. We take care of the details as you scale, so you don’t have to.
#1
Ranked API for Results and Ease of Use
Reduce costs without reducing results
Through our commitment to value through optimization, our platform and team ensure you get a great deal without sacrificing performance.
30%
Typical savings on Messaging Costs
RESOURCES
Start building
Our code is your code.
Messaging API documentation
Telnyx’s Messaging API supports sending and receiving both SMS and MMS. Check out our award-winning developer docs to find out more.
15 minute code tutorial
In this tutorial, we show you how to build an SMS appointment reminder service in 15 minutes.
Overview: Hosted SMS
Learn about sending and receiving SMS via an existing number with Telnyx Hosted SMS.
SOLUTIONS
SMS API use cases
We have the ability to offer our services at scale through Telnyx… Telnyx works closely with us, making sure we're always connected and ready to send.
Hunter Lamirande
Founder, Point Blank Political
CUSTOMER STORIES
Explore more customer stories
SMS Deliverability Guide
Check out our analysis of >1 billion SMS / MMS messages.
In this comprehensive guide, we cover:
- The truth about SMS delivery rates
- The quantitative difference between top performers and the rest
- How to become a top performer in terms of delivery
- Common mistakes and pitfalls to avoid
- Error codes, acronyms and other important delivery related jargon and much more.
Download the full eBook here.
FAQ
Resources, Docs, Support
sms api hub
Find tips, best practices, and guides for sms api
Authentication V2 | Telnyx
Telnyx's Developer documentation provides all the information needed to get started with our platform, including authentication methods.
Messaging APIs | Telnyx
With the Messaging family of products, you can send and receive SMS/MMS messages from your apps, facilitate interaction with The Campaign Registry (TCR) for 10DLC compliance, and more!
Send a message API | Telnyx
Send a message with a Phone Number, Alphanumeric Sender ID, Short Code or Number Pool.
Retrieve a message API | Telnyx
Note: This API endpoint can only retrieve messages that are no older than 10 days since their creation. If you require messages older than this, please generate an MDR report.
Learn about the powerful features of the Telnyx SMS API
What is an SMS API? Dive into the world of real-time messaging, which connects apps to telecom networks, and discover its potential for your business.
Send SMS With Telnyx Python SDK
Sending SMS With Telnyx Python SDK is as Easy as API. Get started sending impactful customer messaging today.
How to boost customer engagement with SMS
Learn how SMS customer engagement drives meaningful interactions with tailored strategies, real-time updates, and personalized communication.
Telnyx - How to Ensure Compliance With SMS Regulations.
There are regulations that dictate how organizations can interact with end users via text. Understand what the rules are & how to comply with them.
Mass text messaging: How to get started with Telnyx
Learn the advantages of mass text messaging for business and how to send messages in bulk with the Telnyx SMS API.
SMS & RCS: Complementary solutions for businesses
Learn how SMS & RCS complement each other to create a unified messaging strategy that combines reliability with rich media engagement for business success.
Telnyx Blog | CPaas & UCaaS Resources
Find data-driven research, comprehensive guides and all things SIP trunking, voice and SMS APIs, wireless and more.
Leveraging SMS customer engagement to increase ROI - Telnyx
Learn how SMS customer engagement can be used to deliver a positive customer experience and drive more sales.
How to text Canada: A guide to business communications
Master texting in Canada with our guide: Understand phone number formats, country codes, and Canadian SMS regulations.
Telnyx vs. Twilio for SMS / Twilio SMS Alternative
Telnyx and Twilio both offer programmable SMS messaging. But how do the two providers compare?
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Telnyx SMS Guide | Telnyx Help Center
Here you will find a collection of links that will explain how to build applications using our SMS offering.
Setting Up a Messaging Profile | Telnyx Help Center
Here we will explain how to get SMS ready with Messaging Profiles on Telnyx.
Send a Text with the Telnyx Python SDK | Telnyx Help Center
A quick video walking you through using the Telnyx Python SDK to send messages.
Receiving SMS on your Telnyx number | Telnyx Help Center
Begin your journey with Telnyx: Learn how to sign up and set up a Mission Control account effectively.
Getting Started with Messaging | Telnyx Help Center
Begin with Telnyx messaging: Toll-free, error codes, SDKs, and webhook utilization.
Telnyx Messaging Error Codes | Telnyx Help Center
This article provides a breakdown of the messaging error codes used by Telnyx and their meanings!
SMS API | Built for CRM and Sales
Enhance your CRM tool with our SMS API. Build customer relationships seamlessly while ensuring compliance with data and privacy restrictions.
SMS Marketing API and Platform [Use Cases]
Enhance your SMS marketing with Telnyx's powerful API and platform. Start optimizing your campaigns today.