OTP via SMS / voice
Global coverage for one-time 2FA passcodes. Authenticate users on any mobile device or landline, anywhere.
Fast global delivery
The Authy service is built on a world class communications platform, providing reliable SMS and voice delivery around the world. Multiple long and short codes in different countries and preregistered sender IDs are used to ensure timely delivery.
Intelligent routing
Our high-quality SMS platform automatically selects the right route across our network of aggregators and carriers. We use positive feedback to replace failing routes on the fly.
Ubiquitous device support
SMS is a capability found in all mobile phones, allowing for easy user enablement because it works without internet connectivity. Voice authentication allows for landline use and is the fallback for when users have no access to an SMS enabled device.
Fast to implement
Delivered as a modern REST API, you can implement the Authy solution in a single sprint without worrying about availability, reliability or service security. We handle that for you. Just sign up and get started within minutes. Everything can be accessed immediately; we don’t hide our API behind a sales person.
Identity is the new perimeter. Coupled with key security requirements, such as Twilio’s Authy, it can be secure, relevant, and delightful from an end user perspective.
Custom messages
Sometimes you want to add in an extra piece of information into the authentication SMS message. Authy allows you to fully customize the message to your needs.
Device-only delivery
We ensure the SMS only goes to a real handset and not to web portals, reducing the risk of compromised desktops in the authentication chain. (Note: only available in certain geographies.)
Variable code length
Authy allows you to choose a token length between 6, 7 or 8 numbers, making easy to find the right level of security for your application and increased usability where necessary.
Anti-fraud
Built in whitelisting and monitoring of numbers used for fraud helps prevent unnecessary costs and reduce fraudulent activity, saving you money.
Language support
We deliver the code or voice call in a range of languages, making it easier for the end user to understand the message they are getting. Language is automatically selected for the user based on their country code.
Coverage
We can reach your users in over 200 countries and use multiple SMS carrier networks to give us the best confidence in the delivery of the codes.
Voice or SMS
To ensure full coverage of your users, you can offer either SMS or voice capabilities. This means even those in very remote locations with only a landline can still gain access to the token out of band.
Millions and billions
Authy services applications with millions of users, for customers such as Twitch, Coinbase and SendGrid. We handle billions of API calls with a solution designed to scale as you do.
Documentation
We have all the information you need to start building. Get unstuck quickly with tutorials, sample code, and extensive API documentation. Plus, we provide example cURL commands and POSTMAN samples to accelerate your engineering efforts.
Helper libraries
Program in the language you already use with libraries available from Twilio and its community.
Access roles
Manage user permissions with unique access roles for admins, developers, support and billing.
Communicate reliably
Experience a 99.95% uptime SLA made possible with automated failover and zero-maintenance windows.
Operate at scale
Extend the same app you write once to new markets with configurable features for localization and compliance.
Many channels
Use the same platform you know for voice, messaging, video, chat, two-factor authentication, and more.
No shenanigans
Get to market faster with pay-as-you-go pricing, free support, and the freedom to scale up or down without contracts.