Simplify authentication at scale with Verify API
Validate users over SMS and other popular channels—including new Silent Network Authentication—with a full-managed API that does the heavy lifting for you.
A multi-channel user verification solution
in one turnkey API
Add seamless two-factor authentication to your onboarding and login flow with a single API that does the work of a full one-time password (OTP) delivery solution.

Introducing Silent Network Authentication
Now you can confirm phone number possession without interrupting the user flow. Protect end users, accounts, and transactions with secure authentication that doesn’t require users to wait or leave your app.
Reduce fraud at scale
without the workload

Build with out-of-the-box convenience
Quickly integrate a ready-use solution that handles all your connectivity, channels, code generation, fraud monitoring, and more using native software—so you don’t have to.
Mitigate fraud seamlessly
Reduce fraud across your multi-channel user experience with phone number verification that uses one API endpoint to validate users and detect fraud with minimal friction.
Optimize OTP conversions
Ensure global deliverability via preferred channels like SMS, voice, email, Silent Network Auth, WhatsApp, push, silent device approval, and time-based one-time password (TOTP).
Use cases
Seamless user authentication
for your whole customer journey
Onboarding and signup
Offer a seamless, secure experience across channels that prevents fake account creation and drives conversions.
Logging in
Protect your authentication flows to prevent account takeovers, and bolster end-user trust and loyalty.
Transacting
Protect high-value transactions and purchases to reduce payments fraud globally.
Managing accounts
Validate password resets, device changes, user reactivation, and other account changes to boost retention.
Confirming number and email owners
Confirm possession of phone numbers and emails to ensure reliable end-user communication at scale.
Preventing fraud with Fraud Guard
Block fraud by detecting artificially-inflated SMS traffic with automated, built-in fraud detection tools.
Capabilities
A simple solution to
passwordless verification at scale

Offer users a convenient security experience with Twilio Authy
Simplify your users’ verification process with the top consumer authentication app, Twilio Authy. Works with Verify API to support multi-device syncing, cloud backups, and fast account recovery across channels, including push and TOTP.
Download for Android, iOS, and desktop.
Pricing
Reduce fraud and overhead with
a fully-managed verification API
Sign up for free to start building without commitments. Only pay for each successful verification with Twilio’s flexible pay as you go pricing.