Voice-based OTP verification that works on DND numbers. Flash call, missed call OTP, and 40+ languages including Hindi, Tamil, Telugu.
95%+
Delivery Rate
3 sec
Avg Delivery
40+
Languages
24/7
Support
95%+ Delivery
Works on DND
40+ Languages
Multiple verification methods for every use case
Higher delivery rates than SMS. Voice OTP reaches even DND numbers and areas with poor SMS connectivity.
Lightning-fast OTP delivery. Calls are initiated within 2-3 seconds of API request.
Instant verification using caller ID. No user input required - the app reads the OTP automatically.
Zero-cost verification using missed calls. User gives a missed call and receives OTP via callback.
Support for Hindi, Tamil, Telugu, Kannada, Malayalam, and 35+ more Indian and international languages.
Voice OTP calls bypass DND restrictions. Transactional calls are exempt from Do Not Disturb.
Audio-based CAPTCHA for accessibility. Secure bot prevention that works for all users.
Automatic SMS fallback if voice call fails. Ensure 100% delivery with hybrid verification.
Higher delivery, better security, happier users
95%+ delivery vs 85% for SMS
Works on DND numbers
Harder to intercept
Better for visually impaired users
Simple REST API
SDKs for all platforms
Webhook callbacks
Detailed analytics
Simple integration, powerful verification
Simple REST API integration. SDKs available for Node.js, Python, PHP, Java, and more.
Call our API with user's phone number. We generate and deliver the OTP via voice call.
User receives automated call with OTP spoken in their preferred language.
User enters OTP in your app. Call our verify API to validate.
Voice OTP for every verification scenario
Voice OTP solutions for your industry
No monthly fees. Pay only for what you use.
See what our customers say
"Switched from SMS OTP to voice OTP and our delivery rate jumped from 82% to 96%. Game changer for user verification."
PM
Product Manager
"Voice OTP works even on DND numbers. Our registration drop-offs reduced by 40% after implementing Edesy."
C
CTO
"The multi-language voice OTP in Hindi and Tamil made a huge difference for our regional customer base."
HO
Head of Engineering
See how Edesy compares to other OTP providers
Explore other Edesy telephony products that work well together
Related Telephony & Privacy
Works Well With
Start with 100 free OTP credits. No credit card required.