Stop losing Indian users to failed SMS OTPs.
Deliver 99.9% verification speeds under 2 seconds across India by bypassing traditional TRAI DLT hassles with WhatsApp-first OTPs and AI Voice fallback.
Sub-2s
delivery target
99.9%
verification reach
India
routing optimized
Routing engine
India WhatsApp verification workflow
WhatsApp Business message
successUtility/Auth template selected for Indian domestic number
2s timeout monitor
pendingLive delivery receipt and read-state watcher
AI Voice fallback
Fallback armedRegional voice OTP triggered if WhatsApp stalls
Verified under 2 seconds
Enterprise verification stack
Built for Indian acquisition, teams, and cost controls.
Replace brittle SMS-only OTP journeys with WhatsApp-first verification, regional voice fallback, and intelligent routing for India-scale onboarding.
WhatsApp Team Verification
Secure shared team inbox authentication for operations teams, agencies, call centers, and multi-location businesses.
Vernacular AI Voice OTPs
Deliver OTP calls in regional language flows when WhatsApp or SMS does not complete quickly enough.
Fallback voice latency
1.7s
Meta Utility Cost Optimizer
Programmatically minimize WhatsApp utility template costs for Indian domestic phone lines by selecting the right template, checking prior session context, and avoiding unnecessary retries.
Model My OTP CostsPay for Delivered Requests Plus Fixed Subscription
Estimate SMS usage at 20 paise per message. WhatsApp uses direct Meta Utility or Authentication base charges with zero markup, while Voice and AI workflows include usage plus fixed subscription charges.
+18% GST Applicable
Monthly request volume
50,000
requests/mo
Estimated SMS usage cost
₹10,000
Calculated at INR 0.20 per delivered SMS message. Fixed subscription charges are billed separately.
WhatsApp Native API
Meta pass-through, zero markup
WhatsApp Business messages follow direct Meta Utility or Authentication pricing with a zero-markup optimization pass.
DLT Smart SMS Route
20 paise / SMS message
Smart SMS transaction routing for Indian verification and fallback journeys at INR 0.20 per message.
Vernacular AI Voice OTP
Usage + fixed subscription
Localized regional Indian dialect support with voice usage and fixed subscription charges.
Live API sandbox
Trigger WhatsApp verification with AI voice fallback in one request.
curl -X POST https://api.nexiotel.com/v1/verify/india \
-H "Authorization: Bearer $NEXIOTEL_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"phone": "+919876543210",
"channel": "whatsapp_first",
"fallback": "ai_voice",
"language": "hi-IN",
"ttl_seconds": 120
}'Ready for India-scale verification?
Replace fragile SMS OTP flows with WhatsApp plus AI Voice fallback.
Nexiotel can help you map your current OTP failure points, domestic phone line costs, language coverage, and fallback strategy before integration.
Plan My Verification Flow