2 Factor Authentication

with SendOTP

Mobile number verification, 2-factor login, voice backup call,
OTP protected transactions with enhanced security and speed.
Group 17307@2x

SendOTP 2.0

with invisible verification

Enable authentication with invisible verification
The magic happens when OTP gets auto verified.
Just integrate and let the magic begin.
(Currently available in India)
  • Platform
  • Success Rate
  • Verification Time


  • SMS + Voice
  • 99%
  • 8 seconds

Regular OTP

  • Works with SMS
  • 95%
  • 10 seconds

How it works

A comprehensive solution for 2FA

Pin Generation

Our platform provides the back-end logic needed for PIN generation (OTP) so you don't have to.
Each code is tied to an individual user and can only be used once.

Number Lookup

Save money and increase conversation rates with our number validation. We're able to catch invalid numbers as they're entered, making sure your message is headed to a valid number.

Voice Failover

Voice-based 2FA adds text-to-speech capability to the standard 2FA process, enabling you to place calls and deliver user authentication PINs via voice audio. By adding voice failover message delivery rates can be pushed close to 100 percent.

Global Coverage

Deliver your authentication PINs to users regardless of their location. With MSG91 global coverage spanning 800 networks and 190 countries, you can deliver your one-time PINs with best delivery rates and speed available on the market.

5 minute setup

We made enabling 2-factor authentication a cake walk!

Secure your Website/App in 2 minutes by 2FA (mobile verification).