Telesign Documentation
Explore our documentation, then try our products for yourself using our no-code API Explorer or by installing an SDK in your favorite language and following along with one of our tutorials.
Integrate with Okta
Use Telesign no-code telephony inline hook to easily deliver OTPs via SMS and voice.
Verification products
Easily deliver multifactor authentication (MFA) anywhere in the world to prevent unauthorized access, account takeovers, and fraud.
Engagement products
Send secure alerts, reminders, notifications, and marketing messages using your preferred communication channel.
SMS
Send timely, personalized messages through SMS.
Messaging
Enhance your message with RCS, WhatsApp, Viber, and MMS advanced features.
Deactivated Numbers API
Get reports with daily lists of deactivated phone numbers.
Inbound SMS
Receive Mobile Originated (MO) messages sent by your end users.
Number Masking
Create private, time-limited communication without revealing users’ phone numbers.
Voice
Integrate voice communication (one-way or two-way) into web and mobile apps.
Risk & identity products
Receive insights to assess the risk of interactions across your platform.
Intelligence
Use an account's phone number to assess the risk of an interaction with them.
Phone ID
Retrieve attributes associated with a phone number to inform decisions about interactions and customer records.
Phone ID Live Status
Check if a phone number is still active, if it can be reached, and whether it is associated with a mobile phone that is roaming.