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.
curl -X POST \
--header "Content-Type: application/json" \
--header "Authorization: Bearer YOUR_API_KEY" \
--data '{
"from": "+13115552368",
"to": "+13115552367",
"text": "Hello, world!"
}' \
https://api.telnyx.com/v2/messages
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.
PRICING
See our SMS API pricing
Customers typically save 30% by switching to Telnyx, with lower list pricing and automatic volume discounts.
Starting at:
$0.004
Per messageSOLUTIONS
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.
Ready to get started?
FAQ
An SMS API (or SMS Gateway API) is a software interface that allows developers to build code that can send and receive SMS messages using an Application Programming Interface (API).