Send SMS API

Send and receive text messages effortlessly with TeleSign's global text message API. Strengthen customer relationships and reach your global audience with text messaging from the leaders in two-factor authentication (2FA).

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Engage consumers worldwide
Verify your users securely
Delight users with timely alerts

Send SMS API

Send and receive text messages effortlessly with TeleSign's global text message API. Strengthen customer relationships and reach your global audience with text messaging from the leaders in two-factor authentication (2FA).

Get started

Send SMS API

Send and receive text messages effortlessly with TeleSign's global text message API. Strengthen customer relationships and reach your global audience with text messaging from the leaders in two-factor authentication (2FA).

Get started

Trusted SMS Delivery

Connect with your customers on one of the largest direct global networks, trusted by the world's biggest digital brands to power billions of text messages every month.

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Global Coverage

Unmatched Global Coverage

Reach more customers with 120+ optimized points-of-presence and 700+ direct-to-carrier routes​.

Reliability

Exceptional Reliability

Optimal performance with higher successful delivery rates than any leading competitor.

Customer Service

5-Star Customer Service

Premium customer support to strengthen communication, reduce costs, and ensure seamless customer interaction.

SMS API in Action

Integrating our developer-friendly global SMS API into your communications platform is simple and makes sending SMS text messages to your customers fast and easy. Get up and running quickly with clear documentation, developer tools, and comprehensive reporting.

When you're ready for expanded reach, widen your messaging to RCS and WhatsApp for more communication channels all from a single messaging API.

Verification Direct-To-Carrier Routes

High Quality, Direct-To-Carrier Routes

TeleSign’s direct access to hundreds of carriers and waterfall approach across different routes ensures exceptional delivery and conversion rates.

SMS Phone Number Cleansing

Advanced Phone Number Cleansing

Phone number cleansing can improve your message deliverability by more than 10%. Telesign's phone number cleansing optimizes your global messaging delivery and helps reduce operational costs by automatically formatting phone numbers based on message type and country of origin.

RCS conversation

Interactive Two-Way Communications

Strengthen customer relationships by turning one-way SMS communication into a two-way conversation. No matter if they're in Antarctica or on Kilimanjaro, our SMS API makes it easy to send and receive text messages from customers anywhere in the world.

SMS Waterfall Failover System

Waterfall Failover System

Our SMS API applies an automatic failsafe and routes all SMS communication to a secondary provider so you can rest assured that, in the event of a primary delivery failure, you'll still see optimal delivery and completion rates.

SMS Opt Out

Opt-Out Management

Receive SMS opt-out requests from customers and automatically register them in your system with TeleSign SenderID, so that customers know you’re dedicated to providing them with a user-experience tailored for them.

number masking compliance

Compliance & Onboarding Support

We provide premium customer support to help you get up and running with our SMS API and ensure that your TeleSign experience is smooth and successful.

SMS API in Action

Integrating our developer-friendly global SMS API into your communications platform is simple and makes sending SMS text messages to your customers fast and easy. Get up and running quickly with clear documentation, developer tools, and comprehensive reporting.

When you're ready for expanded reach, widen your messaging to RCS and WhatsApp for more communication channels all from a single messaging API.

Trusted by Top Companies

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EA logo
EA logo
EA logo

“Working with TeleSign allowed us to quickly and effectively integrate SMS text messaging into our application.”

Rob Bauman
Director, Partner Engagement & Operations
EA

“We needed a partner that could scale to support our ever-expanding global footprint. TeleSign delivered the scale we were looking for.”

Chuck Mortimore
VP, Product Management, Identity, and Security
Salesforce
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Interested in learning about how TeleSign's identity and engagement solutions can prevent fraud while fostering secure and global growth for your business? Let's chat.