OTP Messages That Never Fail
Deliver authentication codes in under 2 seconds with 99.5% reliability. Secure your user onboarding, transactions, and login flows with VoiceGram’s high-speed OTP service across SMS, WhatsApp, and Voice.
Lightning Fast Delivery
Our smart routing engine ensures OTPs reach users within 2–3 seconds across all major carriers in India.
99.5% Success Rate
Auto-fallback to alternate routes ensures maximum deliverability – even during network congestion.
End-to-End Encryption
Your OTPs are transmitted via secure HTTPS endpoints with optional IP whitelisting and API keys.
Multi-Channel Delivery
Send OTPs via SMS, WhatsApp, or Voice Call (Text-to-Speech). Let your users choose their preferred method.
1.2B+
OTPs delivered yearly
<2s
Average delivery time
99.5%
Delivery success rate
24/7
Uptime monitoring
Why Businesses Choose VoiceGram for OTP
Easy Integration
- REST API with SDKs for PHP, Python, Node, Java
- Detailed documentation & sample codes
- Webhooks for delivery status
Real-time Analytics
- Dashboard with delivery logs
- Conversion tracking & drop-off points
- Export reports for compliance
Pay-as-you-go Pricing
- No monthly commitment – only pay for OTPs sent
- Volume discounts for high scale
- Free technical support
Dedicated Support
- 24/7 customer support via phone, email, WhatsApp
- Account manager for enterprise
- SLA-backed uptime
Ready to integrate OTPs in minutes?
Get started with VoiceGram’s OTP service – zero setup fee, free trial credits available.
Get Free Demo →