OTP & Authentication
Sub-Second OTP Delivery for Secure Authentication
Industry-leading 0.28s OTP delivery via direct SS7/SMPP carrier connections. Globally routed, ultra-low latency, with automatic WhatsApp fallback for maximum deliverability.
Why MSGPIE for OTP?
Direct Carrier Routes
SS7 and SMPP direct connections to Tier-1 operators — no aggregator hops, zero queuing delays.
Automatic Failover
If SMS fails, Smart Routing instantly retries via WhatsApp OTP — zero user friction, 100% auth success.
Global Regulatory Ready
Carrier-ready protocols for India, GDPR-ready for EU, TCPA compliant for USA — all in one API.
Fraud Prevention
Built-in SIM swap detection, velocity checks, and IP reputation scoring on every OTP request.
Quick Start — Send OTP in 3 Lines
curl -X POST https://api.msgpie.com/v2/otp/send \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{"mobile": "+919876543210", "template_id": "your_template_id"}'
// Response: { "otp_id": "otp_abc123", "expires_in": 600, "channel": "SMS" }