OTP Voice SMS or Bulk OTP Voice Calls is used to verify a mobile number. This verification is done by making a call to the mobile number & playing a sequence of digits.
From nationalized banks and oil PSUs to airlines and e-commerce leaders, India's top enterprises trust SMSIndiaHub for sub-7s messaging delivery.
















































Completely API-based solution. Integrate your platform with SMSHUB Voice OTP API and start initiating OTP calls to your users in real time.
Completely API based solution. Integrate your platform with SMSHUB Voice OTP API and start initiating OTP calls to your users in real time.
Add an extra layer of security to your e-commerce website and software without increasing complexity for users. Authenticate the entire process of registrations by voice call OTP verification.
Send text-to-speech, whether it is blocking, deleting, or activating an account. Use voice OTP verification to make sure customers information remains secure. This can be the best-secured system for your users.
Make all financial transactions safe and secure. To complete the transaction securely, add extra security with a Voice OTP confirmation.
With the help of our free voice call OTP API multiple industries are getting benefits like Banking institutions, Accounts and Financial institutions, Share and broker firms.
Guaranteed delivery of sensitive and critical information like OTP via our Voice Call OTP Service. Voice call based OTP is a two-factor verification tool that authenticates potential clients.
Our Voice OTP API platform connects directly with tier-1 telecom operators across India to deliver sub-7 second voice calls, text-to-speech customization, and real-time delivery reporting for your application.
Our premium and trusted notification solution ensures 100% delivery of sensitive and critical information on any mobile number of India. You can send OTP (one time passwords), login passwords, transaction alerts, and other alerts as well.
Discover key operational workflows where voice call OTP verification elevates security and customer confidence.
Add an additional layer of security to your e-Commerce website, software, without increasing the complexity for users. Authenticate registrations with Voice Call OTP Verification.
Send text to speech be it account deletion, restoration or activation, use Voice Call OTP Verification to be sure that your customer data remains secure. Use a premium Voice Call OTP service now.
Make all transactions safe and sound. Add an extra fold of security with OTP verification to complete a transaction securely. Start validation of all transactions now!
Reactivate a client account with a confirmed acceptance from them. Use OTP verification code as a means of obtaining permission.
Instead of sending links or verification code via email, use the OTP service to verify users before password resets.
Automated trigger → Text-to-Speech conversion → Instant operator call → Digit playback & OTP submission verification.
Compare our instant setup and high-performance infrastructure against traditional OTP gateways.
| Feature / Criteria | With SMSINDIAHUB™ | Without SMSINDIAHUB™ |
|---|---|---|
| Activation Time | ✓ Go Live! within 30 seconds and start sending. | 24 hours account and sender ID activation. |
| Login Activity | ✓ Simple Sign-up Process. | Long registration forms and validation. |
| API Integration | ✓ Restful API, connect application, website and software. | You need to invest too much time & money on developers. |
| Technical Expertise | ✓ No technical expertise required. | Technical know how required for integration. |
| Inexpensive Pricing | ✓ Lowest rates, zero Setup cost and No hidden fees. | High price or poor quality service. |
| Customer Support | ✓ Dedicated account manager & 24/7 assistance. | No one cares about after sales! |
Protect user accounts with automated 2-Factor Voice OTP authentication designed for sensitive transactions.
Automatically switch to Voice OTP whenever SMS delivery experiences network latency or carrier delays.
Quick Answer: Voice OTP Service is an authentication solution that delivers a one-time password (OTP) through an automated voice call instead of SMS. It is commonly used for user verification, two-factor authentication (2FA), and as a fallback when SMS OTP delivery is delayed or unavailable.
Quick Answer: Voice OTP works by generating a unique verification code and sending it to the Voice OTP API. The platform automatically places a voice call to the recipient and reads the OTP using text-to-speech or a pre-recorded voice. The user enters the OTP to complete authentication.
Non-Banking Financial Companies (NBFC) leverage instant Voice OTP calls for securing high-value transactions.
Read More →Schools & colleges send automated voice alerts, announcements, and parent verification codes.
Read More →Automate two-way communication, instant order verification, and checkout OTP authentication.
Read More →