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OTP Authenticator

Stay ahead of the game by implementing robust authentication processes and increase security measure with Mtalkz OTP authenticator service. Secure online transactions and safeguard user’s accounts with an OTP that is generated through our AES 256 secure algorithm.  One time passwords (OTPs) are an authentication technique normally utilised as a feature of two-factor identification (2FA) and multi-factor authentication (MFA) that can help balance these requirements. OTPs are unique passwords that are only valid for a single sign in session for a defined timeframe. 

We live in a digital world, where online transactions are no longer a trend, rather they have become indispensable. Nowadays, every person in one way or the other uses online services for buying different products and services. An OTP is securely used as a mode of authentication to verify the users before a transaction or running a session in an app/ website. The OTP is generated from a 2FA security token and is delivered through an SMS. For safety reasons, the OTP is designed in a way that it would be valid only for a short period of time; after that particular period the users have to obtain a new OTP. 

Give secure OTP authentication to your applications by using Mtalkz OTP Authenticator API.

Use simple APIs and provide secure validations to your website or application.

Time Guarantee


User Authentication


Dedicated Routes

Feel safe to send OTP’s through dedicated carrier connectivity and instant routing

OTP Length​

Configurable length of OTP of 4 Digits or 6 Digits

Reports & Analytics

Intuitive dashboards that ease monitoring, management, and reporting capabilities

Validity Period

Configurable validity of OTP second, minutes or hours

Leverage the Power of Conversations

Key Benefits

Protect your users from phishing attacks, fraudsters, and hackers

Validate user’s identity every time a request is generated

Deliver the OTP through SMS or via Voice SMS

Deliver emergency alerts, failover alerts, system shutdowns, in just seconds

otp authenticator sms

Why OTP?


74% of consumers want OTP for every e-payment transaction.


Completely secure, does not require internet connection or app. 


No more need to generate and validate OTP within your application, do it with an AES 256 secure algorithm.

Embrace Powerful Digital Engagements

Talk to us and improve your marketing ROI by transforming your customer journeys

OTP SMS Service – FAQs

SMS marketing is one of the fastest ways to get messages across the highest percentage of audience and that too within a few minutes. On average, according to various researches, 98 percent of SMS messages are opened and read within five seconds of delivery. If you compare this with any other messaging medium, the open rate is much less, SMS marketing sounds like a more effective marketing option.

The simple concept of OTP authentication has unique built-in features.  Since the concept requires that the user be authenticated in a completely independent system that does not store user data hence the Bulk SMS systems are best suited.  Here in addition to password verification of the user the enterprise apps or website triggers an authentication code to the users mobile through SMS.  The user self authenticates oneself to the the app by typing the so received code in the app and completes the OTP authentication.

OTP Verification Service is provided by providers like Mtalkz. Here organisations can use the the system as a services and bind the APIs to their applications to trigger the OTP on demand. The services is available with or without OTP generator. OTP generator service is used by organisations such as financial institutions which would like to have even the OTP generation and authentication services in a completely different system. Mtalkz also offers this service across the world in more than 225 countries.

Choosing OTP service provider is a relatively simple exercise. One can ask for demo accounts and test if the OTPs are getting delivered fast enough. Mtalkz offers SLA based service where 95% OTPs are delivered within 30 seconds. A more customised service is also available where the OTP deliveries take place within 15 seconds. Mtalkz also offers International OTP service to deliver OTP across the world.

Visit out OTP SMS Pricing Page.  For a more customised plan please drop in a request to enqiry@mtalkz.com

You can use just Simple steps. Email (enquiry@mtalkz.com) or call  (+91-9868629924). Our Experts solve your problem immediately.