Communications APIs

Vonage APIs (formerly Nexmo and TokBox) help growing startups and agile enterprises enhance customer experience and realise new business outcomes at scale. With the most comprehensive suite of communication channels, a global platform and expert support, you can abstract the complexity of communications and innovate faster.
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Communications APIs


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.


Programmatically send and receive SMS in practically every country.


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.


Stitch conversations from multiple communications channels into a single thread.


Send transactional messages, notifications and marketing campaigns through the customer journey via email.

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Use Case APIs


Verify user accounts and prevent fraud seamlessly with mobile two-factor authentication using SMS or voice.


Orchestrate multichannel message delivery with failover.

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Management APIs


Download CDR data without limitations.


Audit an array of account events to generate reports.

Advanced Insights

Integrate detailed video session data into your customer experience analytics.


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.

Short Codes

Distinguish and brand your messages.

Number Insight

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

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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 optimised 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
  • Programme management to help meet technical and business objectives
  • Higher reliability from guaranteed availability increase to 99.99%

See how businesses like yours are using Vonage APIs today.

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Vonage APIs: Loved by Developers. Built for Business.

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UK free phone number: 0330 808 9348