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Communications APIs

With Vonage APIs (formerly Nexmo and TokBox), growing startups and agile enterprises can build best-in-class communications solutions at scale. Our global platform, comprehensive suite of communications channels, and expert support help you move quickly to offer your customers the most helpful experience possible, sooner rather than later. 

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Here's what customers like you say about Vonage Communications APIs.

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Communications APIs

Video Build live interactive video into your web and mobile apps.

Engage customers via MMS, SMS, and social chat apps such as Facebook Messenger, WhatsApp, and Viber. Try it with our Messages API Sandbox feature.

SMS Programmatically send and receive SMS in practically every country.
Voice Build high-quality voice applications in the cloud.
In-App Voice Build branded in-app voice experiences on mobile or web.
SIP Trunking Make and receive calls from the cloud with your existing VoIP infrastructure.
In-App Messaging Create your own branded in-app messaging experience on mobile or web.
Conversation Stitch conversations from multiple communications channels into a single thread.
Email Send transactional messages, notifications and marketing campaigns through the customer journey via email.

Orchestrate multichannel message delivery with failover.

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Authentication APIs

Verify Seamlessly verify user accounts and prevent fraud with mobile two-factor authentication using SMS or voice.
Number Insight

Get real-time intelligence on any phone number in the world.

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Management APIs


Flexible reporting for all Vonage communications channels in one powerful API.

Audit Audit an array of account events to generate reports.
Advanced Insights Integrate detailed video session data into your customer experience analytics.
Subaccounts Use subaccounts to simplify configuration, reporting, and billing of different projects.
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Programmable Numbers

Phone Numbers Instantly provision local numbers at global scale.
Dedicated Short Codes Distinguish and brand your messages.
10 DLC

Provide a higher quality of the delivery of your messages originating from long codes while continuing to protect end-users from unwanted messages. (For messages sent to USA numbers only.)

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Scale securely, reliably, and globally

The Vonage API enterprise-grade platform enables you to scale easily, wherever you need to be in the world, with reliability, scalability, and security.
  • Global reach across 190+ countries and over 1,600 networks
  • Automated compliance engine
  • Patented Adaptive Routing algorithm for optimized message delivery
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Programmable solutions

Explore API solutions that will enhance the most common interactions with your customers, including:
  • Customer Notification and Engagement
  • Voice-Based Critical Alerts
  • Call Tracking
  • Interactive Voice Response
  • Two-Factor Authentication
  • Private SMS Communication
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Dedicated Services

Think big and build fast with the enterprise service plan

Get consulting expertise, integration services, platform uptime, and enterprise-grade support—all in a single package.
  • Technical resources to help you scope, architect, and deploy your apps
  • Faster support with contractual response SLAs
  • Easier communication with multiple support channels
  • Program management to help meet technical and business objectives
  • Higher reliability from guaranteed availability increase to 99.99%

Learn about our partner solutions

Vonage API partners build, integrate, and help implement unique communications experiences with our APIs that accelerate business—and attract and retain customers like never before.
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Learn how key industries are using Vonage APIs today.

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Vonage APIs: Loved by Developers. Built for Business.

Vonage Communications APIs is a leader in Cloud Communication Platforms on G2


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