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SMS-Based OTP Authentication API for Secure User Verification

Secure user authentication with India’s fastest OTP SMS API. Send 2FA codes, login passwords, transaction OTP, and verification tokens within 10 seconds with a 99.9% delivery rate.

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OTP SMS
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What is OTP SMS?

OTP (One-Time Password) SMS is a high-priority automated message used for two-factor authentication (2FA) and identity verification. These messages are quickly triggered by your system to deliver unique, time-bound code while ensuring secure, safe access to accounts and payments.

Benefits of GetItSMS OTP Service

Fast OTP Delivery

Lightning-Fast Delivery

Each second matters during a login. With our dedicated OTP routes, you can send codes directly to the recipient's inbox in under 10 seconds.

Secure OTP Authentication

Maximum Security

Secure your users from unauthorized access. Our encrypted gateway makes sure that sensitive verification codes remain protected at every point.

Global OTP Connectivity

Global Connectivity

Be it an Indian or international user, our strong carrier tie-ups enable secure OTP delivery across borders without any delays.

Higher Conversion with Fast OTP

Increased Conversion

Don’t lose your users due to slow verification. Faster OTPs lead to instant checkouts and improved user retention.

OTP Failover and Backup Routing

Smart Failover System

If a main route is busy, our system automatically switches to an alternative route for guaranteed OTP delivery without interruption.

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Scalable OTP Messaging Features

Direct Operator Connectivity:

We use Tier-1 carrier routes to decrease "hops" and offer the shortest possible route between your server and the user's phone.

API-First Architecture

Designed for developers. Integrate our OTP API into your app or website effortlessly with just a few lines of code (Supports Python, PHP, Node.js, and more).

Real-Time Latency Monitoring

Monitor OTP performance with real-time delivery insights using our advanced DLR dashboard.

24/7 Priority Routing

Compared to promotional messages, OTPs sent through "White-Route" gateways are more active and monitored 24 hours a day.

Dynamic Template Support

Send personalized OTP messages, including the brand name and specific actions, to improve trust.

OTP SMS

Why Choose GetItSMS for OTP SMS

Why Choose GetItSMS for OTP SMS

Trusted by 10k+ Brands

Deliver millions of OTPs every day with 100% data privacy through GetItSMS, India’s most trusted and secure authentication partner.

Free DLT Registration

By simplifying the 2026 DLT mandate, we help businesses register their "Service Implicit" templates for OTPs with zero hassle and zero cost.

Ultra-Low Latency Routing

Use Use our dedicated β€œOTP-only” priority pipes to avoid standard traffic. It ensures codes are delivered to the customer’s inbox within 10 seconds.

Developer-First API

Integrate our high-speed REST API into your app or website in minutes using complete documentation for PHP, Python, Node.js, and more.

Fail-Over Redundancy

If one operator route slows down, our Smart-Switch technology quickly reroutes your OTP through a secondary carrier to ensure 100% success.

Real-Time Success Analytics

Track "OTP Delivery vs. Submission" rates in real-time. Such insights help you optimize your user sign-up flow and reduce drop-offs.

How It Works?

Three simple steps to send your SMS marketing messages

1
Account Setup

Create your GetItSMS account and select the Promotional Route.

2
DLT Approval

Register your Header and Templates with our free expert assistance.

3
Send SMS

Start delivering secure codes instantly via our Developer API or Web Panel./p>

Numerical Results of Our Bulk SMS Service

Use Cases of OTP SMS

OTP SMS is the most critical layer of your security infrastructure, ensuring only authorized users gain access.

User Registration OTP Verification

User Registration

Verify mobile numbers immediately at the time of sign-up to eliminate fake accounts.

Two Factor Authentication OTP

Secure Login (2FA)

Add an extra layer of security with Two-Factor Authentication each time a user logs in to their accounts on a new device.

Transaction OTP Verification

Transaction Verification

Approve high-value payments or sensitive data changes using a time-sensitive 6-digit code.

Password Reset OTP

Password Resets

Enable users to securely recover their accounts without depending on slow email delivery.

Secure System Access OTP

Critical System Access

Protect your internal employee portals or database access by requiring an OTP for entry.

How to Send OTP SMS with GetItSMS:

1. Secure Portal Login

Go to the official GetItSMS website and log in to your account. You get access to a centralized dashboard for your credits, campaign history, and real-time messaging tools.

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Secure Portal Login

2. Manage DLT Compliance

Configure your DLT parameters to avoid filtering:

  • Principal Entity (PE) ID: Your unique business registration ID.
  • Sender ID (Header): Your 6-character brand identity (e.g., GITSMS).
  • Template ID: Your pre-approved OTP template (e.g., "Your OTP for {#var#} is {#var#}").
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Manage DLT Compliance

3. Initiate Broadcast

  • Go to the Send Quick SMS menu: Select your route - OTP/Service Implicit (24/7 Priority).
  • Select Header & Template: Choose your approved OTP format.
  • Insert SMS Content: Use variables like {#var#} for the dynamic 4 or 6-digit code.
  • API Integration: Many OTP users rely on our API to send messages automatically during user login or registration.
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Initiate Broadcast

4. Execute & Track Performance

Track your Live API Logs to get insight into delivery status and latency reports. It ensures seamless user verification without any friction.

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Execute & Track Performance

Do More Apart From OTP SMS

Looking for other ways to reach your customers? Explore our other powerful messaging solutions

Transactional SMS

Send 24/7 alerts, order updates, and non-marketing notifications.

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Promotional SMS

Boost your sales with marketing campaigns and seasonal offers.

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Instantly connect with your clients with high-delivery SMS for promotions, alerts, and transactional messages.

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Missed Call Service

Generate leads and automate customer replies with missed call-based campaigns.

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Voice SMS Service

Send pre-recorded voice messages to customers for promotions, reminders, and announcements.

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IVR Services

Handle incoming calls more efficiently using interactive voice response and smart call routing.

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International Messaging Services

Reach customers at a global level with international bulk WhatsApp marketing and WhatsApp API solutions.

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