logo
  • Home
  • Blog
  • Service
  • Dev Tools
  • FREE AI
Get A Quote
Call Us
+91 8910642626

Cookies Consent

This website use cookies to help you have a superior and more relevant browsing experience on the website. Read more...

logo
  • +91 8910642626
  • innovalogicdev@gmail.com
shape
shape
shape

Blog Details

Home Blog Details
image
  • By Sanjay Dey
  • 14 Apr, 2025
  • IT Consultancy

🔐 How to Send OTP SMS Without DLT Using Otpless.com – A Complete Guide by Innovalogic

Since DLT (Distributed Ledger Technology) became mandatory in India for sending SMS, many businesses have faced delays, rejections, and higher costs in setting up OTP and transactional messaging. But what if you could send OTP without DLT registration, legally and instantly?

Since DLT (Distributed Ledger Technology) became mandatory in India for sending SMS, many businesses have faced delays, rejections, and higher costs in setting up OTP and transactional messaging. But what if you could send OTP without DLT registration, legally and instantly?

Meet Otpless.com — a next-gen platform that allows businesses to send OTPs without SMS using WhatsApp, Google, Email, and more.

At Innovalogic, we’ve successfully integrated Otpless for our clients' apps and platforms — helping them save cost, time, and compliance headaches.

Let’s dive in.

✅ What is Otpless?

Otpless.com is a secure One Tap Login & OTP service that replaces traditional SMS OTPs with WhatsApp OTP, Google OAuth, Email, Phone Call OTP, and even Social Login.

It eliminates the need for:

  • DLT registration

  • Template approvals

  • Sender ID hassles

💡 Why Use Otpless Instead of SMS OTP?

Traditional SMS OTPOtpless OTPRequires DLT registrationNo DLT neededTakes 2–7 days to approveInstant onboardingHigh failure rate98%+ delivery via WhatsAppCostly on scaleWhatsApp OTP is cheaper & reliableNo brandingYour logo & name shown in WhatsApp OTP

🌟 Key Features of Otpless

🔹 1. WhatsApp OTP (Primary Feature)

  • Send OTP directly to users on WhatsApp

  • Branding + verified sender + higher trust

  • Real-time delivery, click-to-login

🔹 2. Google/Email Login

  • One-tap login with Gmail or verified email

🔹 3. SMS & Call OTP (Optional Add-on)

  • If WhatsApp is not available, fallback to SMS/Call

🔹 4. Multi-platform SDKs

  • iOS, Android, Unity, React Native, Web, PHP, etc.

🔹 5. Login Widget & API

  • Ready-to-use login UI or full API access

🔹 6. Dashboard & Logs

  • OTP success, fail, conversion metrics

💰 Otpless Pricing & Plans (As of April 2025)

PlanFeaturesPriceFreeWhatsApp login + 500 OTPs/month₹0Starter5,000 OTPs, branded WhatsApp, basic support₹999/monthGrowth20,000 OTPs, fallback to SMS/Email, analytics₹3,999/monthEnterpriseCustom use cases, unlimited OTP, SLA supportCustom Pricing

🔐 WhatsApp OTP is included in all plans, including free.
📲 SMS fallback requires a paid plan.

⚙️ How to Integrate Otpless API

💻 Step-by-Step for PHP (Backend)

php
CopyEdit

<?php // Send OTP using Otpless API (WhatsApp Login) $phone = "+91XXXXXXXXXX"; // user number $url = "https://api.otpless.com/send-otp"; // Hypothetical endpoint

$data = [ "phone" => $phone, "via" => "whatsapp" // or "sms", "email" ];

$options = [ 'http' => [ 'header' => "Content-type: application/json\r\nAuthorization: Bearer YOUR_API_KEY", 'method' => 'POST', 'content' => json_encode($data), ], ];

$context = stream_context_create($options); $result = file_get_contents($url, false, $context); echo $result; ?>

🎮 How to Use Otpless in Unity C#

csharp
CopyEdit

using UnityEngine; using UnityEngine.Networking; using System.Collections;

public class OTPManager : MonoBehaviour { public string phone = "+91XXXXXXXXXX"; public string apiKey = "YOUR_API_KEY";

public void SendOtp() { StartCoroutine(SendOtpCoroutine()); }

IEnumerator SendOtpCoroutine() { string url = "https://api.otpless.com/send-otp"; string jsonData = JsonUtility.ToJson(new { phone = phone, via = "whatsapp" });

UnityWebRequest request = new UnityWebRequest(url, "POST"); byte[] bodyRaw = System.Text.Encoding.UTF8.GetBytes(jsonData); request.uploadHandler = new UploadHandlerRaw(bodyRaw); request.downloadHandler = new DownloadHandlerBuffer(); request.SetRequestHeader("Content-Type", "application/json"); request.SetRequestHeader("Authorization", "Bearer " + apiKey);

yield return request.SendWebRequest();

if (request.result == UnityWebRequest.Result.Success) { Debug.Log("OTP sent: " + request.downloadHandler.text); } else { Debug.LogError("OTP send failed: " + request.error); } } }

✅ Customize endpoints based on Otpless’ official API documentation.

💼 How Innovalogic Uses Otpless for Clients

At Innovalogic, we build real-money apps, games, delivery platforms, booking systems, and more. Many of our clients face issues with DLT when launching fast.

So we integrate Otpless to provide:

  • 🔐 Instant WhatsApp OTP login

  • ⚡ Faster onboarding for users

  • 💸 Low cost + No compliance delay

  • 🧠 Smarter fallback to SMS if needed

Whether you're launching a Unity-based rummy game, a kart racing app, or a salon booking app, we handle secure login with Otpless—ready to scale.

🚀 Final Thoughts

If you want OTP verification without the headache of DLT, Otpless.com is your best option. With instant onboarding, WhatsApp trust, and a powerful API, it's the modern way to handle authentication.

💡 Want Otpless integrated into your app, website, or game?
👉 Let Innovalogic take care of it. From PHP to Unity, we deliver secure, fast login experiences your users will love.

Tags: how to send bulk sms without dlt registration send otp without dlt how to send otp without dlt
Share:
Search
Category
  • Web Development (9)
  • IT Consultancy (10)
  • App Development (31)
  • UI/UX Design (3)
  • Digital Marketing (9)
  • Gaming Development (21)
Resent Post
  • image
    21 Aug, 2026
    A Developer's Guide to Migrating to React 19
  • image
    20 Aug, 2026
    The Future of iGaming: How Wearable Technology in Real-Money Gaming is Changing the Game for 2026
  • image
    19 Aug, 2026
    How to Launch a Successful Real-Money Gaming App: A Complete Guide
Tags
React React 19 Web Development JavaScript Frontend Development Migration Guide wearable gaming real-money gaming iGaming trends haptic technology smartwatch gaming AR gaming gaming development Real-Money Gaming Gaming Development Mobile App Development Flutter Monetization Kotlin Multiplatform KMP App Development Cross-Platform Development Enterprise Software social casino development sweepstakes casino mobile gaming iGaming Google Ads Gambling Policy Game Development Ad Compliance Social Casino Games SEO Google Update Helpful Content Content Audit Digital Marketing Technical SEO Apple Vision Pro visionOS Enterprise App Development Spatial Computing Augmented Reality VR Training AR Gaming Real Money Gaming Gambling Technology Player Engagement generative AI game development asset creation AI in gaming cost reduction game design payment processing fintech compliance fraud detection Online Gaming Act India Gaming Law Esports Regulation Game Developer Guide Mobile Development Flutter 3.44 Cross-Platform Developer Tools iOS 18 SwiftUI Xcode App Monetization Mobile AI FedNow Instant Payments Fintech Payment Processing AI in Gaming Personalization Responsible Gaming AI Overviews Google SGE Generative Engine Optimization game monetization mobile game development in-app purchases game economy player retention AI in fantasy sports Fantasy Sports App Sports Tech Machine Learning Angular Angular 18.1 TypeScript @let syntax Ad Policy Social Casino Android 15 Android Developers Privacy Features Enterprise Mobility Gaming Policy Advertising Compliance Regulatory Compliance GameTech International Law Sweepstakes Casino Gaming Law Compliance machine learning player lifetime value Google Mobile Ads Next-Gen SDK Android Development Kotlin Mobile Advertising Google Play Policy App Compliance Android Vitals Stripe Payment Gateway Stripe Connect Game Payments Google Play Mobile App Monetization App Distribution Epic Games Lawsuit Swift 6 iOS Development Concurrency Data Race Safety Swift Migration responsible gaming player protection gaming compliance gambling technology Mobile Games GameDev In-App Purchases RMG India Gaming Mobile Gaming Chargeback Policy Review Refund API AI in software development SDLC Artificial Intelligence Future of Coding IT Consultancy AI-powered testing Spam Update Search Engine Optimization Project IDX AI in Development Cloud IDE Firebase Full-Stack Development Native Development Tech Stack 2026 Google Consent Mode v2 Data Privacy GDPR Marketing Analytics third-party cookie update digital marketing first-party data marketing strategy Google Chrome data privacy Policy Updates AI in Marketing Digital Marketing Trends Marketing Automation Predictive Analytics MarTech Game Compliance Regulatory Landscape Legal Tech Skill-Based Games eSports Game Monetization SDK Apple Xcode 16 App Store social casino game compliance monetization visionOS 2 mobile app development app trends 2026 flutter augmented reality AI in apps 5G cross-platform development Apple Intelligence App Intents Siri AI Apps Generative AI UI/UX Design User Experience Design Trends Ambient AI Online Gaming online gaming igaming casino software Google AI Overviews Content Strategy Structured Data zero-click searches Google Business Technology App Security poastman image converter website to android app free tools AI Tools unity free assests unity egf unity tutorial elvish yadav systum unity game ben 10 free unity assests photon rng tseting fantasy how to make fantasy app like dream11 fantasy cricket fantasy cricket sports fantasy cricket app best payment gateway in india accept payments online payment gateway best payment gateways in india payment gateway for ludo game payment gateway for rummy game payment gateway for gaming apps how to send bulk sms without dlt registration send otp without dlt how to send otp without dlt how to send otp without dlt otp how to integrate otp in website transactional sms transactional bulk sms transactional sms india transactional sms gateway india transactional sms service dlt registration in india figma tutorial for beginners figma design figma tutorial ui design figma ux design design design for figma web design ui/ux design facebook ads how to run facebook ads facebook advertising facebook marketing how to make a racing game in unity racing unity 3d unity tutorials gaming games racing game racing games unity games unity game engine unity multiplayer tutorial networking unity3d unity game development indian gamer making indie games unreal engine RNG online money games in india how to earn money online online betting laws in india online gaming license india make money online is betting legal in india india earning money unity source codes unity source code multiplayer multiplayergames dream11 ludo snake & ladder real money
shape
shape
shape
shape
shodow
image

UDYAM-WB-16-0027302

Our Services

  • IT Consultancy
  • App Development
  • UI/UX Design

Quick Link

  • Blog
  • About
  • Contact
  • FAQ
  • Home
  • Refund Policy

Contact Us

45, South Buxarah Road

  • Opening Hours:

    Mon - Sat: 10.00 AM - 4.00 PM

  • Phone Call:

    +91 8910642626, +308-5555-0113

© Copyright@ 2024 Innovalogic

  • Terms & Conditions
  • Privacy Policy