Programmable SMS and MMS API

Targeted and bulk SMS with enhanced delivery, deep insights, and regulatory compliance capabilities built-in.

Build your app Request information
United States, Canada

Send and receive text messages

Reach your customers with automated SMS texting using your trusted business numbers.

Engage your customers in meaningful ways through SMS using chatbots, surveys, appointment reminders, notifications, promotional messages, and more.  Extend how you communicate with your customers with voice and video capabilities already built-in, and the ability to send up to 10,000 unique messages with a single API request.

Support multiple languages and formats

Breakdown barriers with unicode support and multimedia messages

Send and receive text messages in multiple character sets, and even using multiple languages per text.  Engage readers with images, barcodes, QR codes, videos, v-cards, audio, and more with support for 13 outbound and 19 inbound multimedia formats.


Focus on messages, not architecture

Built in queueing, opt-out, and regulatory compliance management capabilities

The RingCentral API platform manages  the distribution of the high volume messages to help keep your account in good standing with carriers.  We also handle opt-in/opt-out, provide APIs to help you set up business rules for data retention and regulatory compliance (HIPAA, PCI, and more), and provide access and analytics for your messages through a secure and encrypted interface.

Send your first SMS message in 15 minutes or less

Adding SMS to your application couldn’t be easier with our SDKs for Java, C#, PHP, JavaScript, and more.
            function send_sms(){'/account/~/extension/~/sms', {
    from: {'phoneNumber': RINGCENTRAL_NUMBER},
    to: [{'phoneNumber': RECIPIENT}],
    text: 'Hello World from JavaScript'

Simple, transparent API pricing

Use your plan's included SMS allotment, and then pay a per message rate. Plus unlike other providers, our rates
include per-message carrier surcharges to provide transparent, predictable pricing without surprise fees.

Inbound Outbound
Domestic Long-code SMS $0.0085 $0.0085
Domestic Long-code MMS $0.013 $0.013
Domestic Toll-free SMS $0.0085 $0.0085
International Long-code SMS See rate card available in Admin Portal

Volume discounts available.
TCR or toll-free registration required. Registration fees may apply.

SMS API frequently asked questions

To help you get started sending and receiving text messages, here are some of the most common questions we get. Of course, you can always ask our community or contact our developer support.

What is Enhanced Business SMS?

Does RingCentral support MMS/ international MMS?

What is the maximum number of SMS messages I can send per minute?

What is the difference between long code and toll-free numbers?

What about TCR/ campaign registration?

What about carrier surcharges or hidden fees?

Where can I find the SMS Campaigns app?

24hourtees resized
We can take their cellphone number that came in… query it against any of the orders in our system... and if there’s an active order we can automatically reply… RingCentral lets our small business act like a big business.
Chais Meyer, Co-Founder
craftlogic resized
Now when a job candidate receives an SMS message, it comes from the phone number of the recruiter handling that account. People can use that number to call you or text you back.
Kevin Ferguson, President, CEO and Founder
advancedsolutions resized
I think I ran into a couple of problems, but I contacted tech support, and they were resolved right away. I wish a lot more companies had that level of help.
Bob Thompson, Director of IT
Get more than communications
Be part of the RingCentral community.
Be a Game Changer
Learn about our APIs, grow your skills, and get recognized and rewarded with RingCentral gear, conference passes, electronics, and more in our revolutionary Game Changer program.
Developer Forum
Developer Forum
Post your questions in our forum and get help from our developer support team and amazing community.
Professional Services
RingCentral Professional Services
Don't have the time or resources to build your app internally? Our professional services team has you covered.
Request info Required fields*

By clicking the button above, you consent to receiving calls and emails from RingCentral. Calls may be connected using automated technology.
Privacy Notice

Revolutionize communications

Learn how RingCentral's unique offering can help you create transformative employee and customer experiences, while reducing costs.