Products
📱 Bulk SMS 💬 WhatsApp Business API 🎙️ Voice SMS & OTP ⚡ SMPP Gateway 🤖 Chatbot Builder
Solutions by Industry
🏥 Healthcare 🏦 BFSI & Banking 🛒 E-Commerce 📚 Education 🚚 Logistics 🏠 Real Estate
More
Pricing Resources & Blog Company Contact Us
📞 +91-9522-232-232 Book a Demo
Home/Products/Voice SMS & OTP
Voice SMS & OTP 2.0 API

Voice SMS in Hindi & 12 languages + OTP that arrives in 500ms

Reach customers who don't read SMS with personalized voice messages in their language. And for OTPs — our 2.0 API delivers transaction codes in under 500 milliseconds, with automatic Voice OTP fallback to ensure 100% delivery.

🎙️ Start Free Trial Book a Demo
✓
Sub-500ms OTP delivery — RBI and TRAI compliant
✓
Voice messages in Hindi, Tamil, Telugu, Marathi + 8 more
✓
Automatic SMS → Voice OTP fallback for 100% reach
Voice OTP
⚡
<500ms
OTP Delivery
<500ms
OTP Delivery Speed
12+
Languages Supported
100%
Delivery with Fallback
24×7
Platform Availability
Product Capabilities

Two powerful products — Voice SMS and OTP API

Bulk Voice SMS
OTP 2.0 API
Multilingual Support
Voice OTP Fallback
Voice SMS

Bulk Voice SMS — reach customers who don't read texts

30–40% of India's population struggles to read SMS messages. Bulk Voice SMS delivers your message as a spoken call in their preferred language — making your communication truly accessible to every customer regardless of literacy level.

✓
Pre-recorded or text-to-speech voice messages
✓
Personalized with customer name and custom variables
✓
DTMF keypress for interactive response campaigns
✓
Call delivery reports — answered, missed, rejected
✓
Schedule campaigns for peak answering hours
Launch Voice Campaign →
OTP API

OTP 2.0 API — sub-500ms delivery for banking-grade security

Our OTP 2.0 API sends transaction verification codes through a dedicated priority queue — bypassing normal SMS queues to achieve sub-500ms delivery. RBI-compliant, TRAI DLT registered and ready for banking and fintech integration.

✓
Sub-500ms OTP delivery via priority SMSC queue
✓
RBI-compliant format — 4 or 6 digit OTP as required
✓
Expiry time configurable: 30 seconds to 10 minutes
✓
Delivery webhook callback for real-time status
✓
Automatic fallback to Voice OTP on SMS failure
POST /api/v2/sendOTP
mobile: 9876543210
template: "Your OTP is {otp}"
expiry: 300
// Delivered in 487ms ✓
Integrate OTP API →
Multilingual

Hindi, Tamil, Telugu & 9 more Indian languages

India's diversity means your customers speak different languages. Our multilingual Voice SMS platform supports text-to-speech and pre-recorded messages in 12 Indian languages — ensuring your brand communicates naturally with every customer.

✓
Hindi, Marathi, Bengali, Tamil and Telugu
✓
Kannada, Malayalam, Gujarati, Punjabi and Odia
✓
Text-to-speech: type your message, we convert to audio
✓
Upload pre-recorded MP3 for brand-consistent voice
✓
Auto-detect preferred language from customer profile
Launch Multilingual Campaign →
Fallback

SMS fails? Voice OTP ensures 100% delivery

Network congestion, phone off, full inbox — there are many reasons SMS OTPs fail. Our automatic Voice OTP fallback system detects undelivered SMS OTPs and instantly retries via a voice call — ensuring your customers always receive their verification code.

✓
Auto-trigger voice call if SMS not delivered in X seconds
✓
OTP read aloud twice for clear understanding
✓
Press 1 to repeat, Press 2 to hear again — DTMF support
✓
Same OTP code used for both SMS and Voice fallback
✓
Available for banking, e-commerce and any OTP use case
Enable Voice OTP Fallback →
Voice SMS Features

Complete Voice SMS platform for every use case

✓
Upload your own MP3 audio or use text-to-speech
✓
Personalize calls with {name}, {amount}, {date} variables
✓
DTMF campaigns: "Press 1 for Yes, 2 for No"
✓
Schedule repeat calls if missed — configurable retry logic
✓
Real-time call logs: answered, missed, rejected, duration
✓
DND filter — automatically skip DND registered numbers
✓
REST API for automated trigger-based voice calls
✓
Web panel for manual upload and scheduling
Start Voice SMS Trial →
Platform
12
Indian Languages
Use Cases

Who uses Voice SMS & OTP from Message India

🏦

Banking & Fintech OTP

Sub-500ms transaction OTP for net banking, UPI, mobile banking and credit card authorisation. RBI-compliant format.

💊

Healthcare Reminders

Voice medication reminders and appointment alerts in regional language — ideal for elderly patients with low literacy levels.

📦

E-Commerce OTP

Checkout payment OTP with automatic voice fallback ensures no payment abandonment due to OTP delivery failures.

📢

Survey & Polling

DTMF-based interactive voice surveys — "Press 1 for Satisfied, 2 for Unsatisfied" — collect feedback at scale.

⚠️

Emergency Alerts

Urgent voice alerts for government departments, utilities and enterprises when SMS might be ignored. Breaks through noise.

🔐

Login 2FA

Two-factor authentication via Voice OTP for enterprise applications and portals — works even without internet connectivity.

Start your Voice SMS & OTP integration in hours, not weeks.

Get sandbox API access, full documentation and developer support — free. Our team will guide you through integration and go-live.

🎙️ Get API Access Free📞 +91-9522-232-232
↑ Get 5,000 Free SMS