Better protection. Greater certainty.

Protect your users and your business with all-in-one, economical verification.

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Need proof?
Meet our full-service API.

Validating genuine customers just got easier. Our patented 2FA technology helps you protect against fraud, build trust, and increase conversion across multiple channels—no telecom or security experience required. Plus, you’ll only pay for successful verifications.

More flexible and powerful than ever.

Verify now gives customers the ability to generate and manage their own PIN codes and even customize the failover sequence to other communication channels. Authenticate end-users using your preferred channel, and add other channels like WhatsApp and Facebook Messenger as they become available.

See how our pre-packaged Verify API helps businesses like yours succeed.

Acquire genuine customers.

Easily add a layer of protection by using a phone number to authenticate new and existing customers
See Two Factor Authentication

Provide convenience without compromise.

Ensure safe access by delivering time-limited, single-use authorization codes with Passwordless Authentication.
See Passwordless Authentication

Protect your business from fraud.

Prevent expensive fraudulent transactions using up-to-date phone number intelligence with Fraud Detection and Step-Up Verification.
See Fraud Detection and Step-Up Verification

Eradicate spam more effectively.

Block botnets and bulk account creation via frictionless phone verification for new users with Spam and Botnet Prevention.
See Spam and Botnet Prevention

Discover more ways our Verify API can simplify your application’s authentication process.

See All Use Cases

Get smarter fail-safe, reliable delivery, and tailor-made messaging.

Intelligent Failover

Automatically resend PIN codes via voice (TTS) to customers through one API request without additional code.

Adaptive
Routing

Ensure optimum delivery by proactively re-routing messages around congestion—like GPS for your SMS.

Flexible Implementation

Choose from two Verify models: Verify Conversion or Verify Request.
See All Features

See how others are making the most of verification with Nexmo.

Using Nexmo’s Verify API, 99.co implemented a user authentication process—improving user retention by 15% while reducing engineering and overall communication costs.
After integrating the SMS and Voice APIs, Grab tapped into Nexmo’s adaptive routing algorithm to improve global deliverability via real-time communications.
Nexmo’s global reach and adaptive routing capabilities made it possible for Zenly to substantially increase successful app installations and increase global reach by 27%.
Using Nexmo’s Verify API, 99.co implemented a user authentication process—improving user retention by 15% while reducing engineering and overall communication costs.
After integrating the SMS and Voice APIs, Grab tapped into Nexmo’s adaptive routing algorithm to improve global deliverability via real-time communications.

Verify Conversion

Our full-service, per-conversion model allows you to start authenticating phone numbers across the globe with just a few lines of code. Verify manages the PIN code with auto failover to additional channels when needed.

Verify Request

Our per-request model allows our customers to manage their PIN code and customize the failover sequence to additional channels.
See Pricing Details

Let’s build something great together.

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