Bulk SMS Service Provider in India

Pan-India Enterprise SMS Platform

Connect Instantly with Millions of Customers Across India

Looking for a reliable bulk SMS service provider in India? CPaaS Studio provides an enterprise-grade, TRAI DLT-compliant SMS platform enabling businesses to deliver transactional alerts, fast authentication OTPs, and high-conversion promotional campaigns across all Indian states and telecom operators.

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Complete DLT Support

Full support for TRAI's DLT guidelines across Jio, Airtel, Vi, BSNL, and Tata—ensuring 100% entity and template approval compliance.

Multichannel Messaging

Connect via SMS, WhatsApp Business API, and Google RCS from one platform with automated fallback routing for guaranteed delivery.

Transparent Volume Pricing

Pan-India volume pricing slabs with lifetime validity, no setup charges, and maximum ROI on every message sent.

Enterprise Infrastructure

Powerful Bulk SMS Engine Built for Scale

High-performance messaging infrastructure with real-time delivery reports and direct operator connectivity.

Multi-Operator Connectivity

Direct connectivity with Airtel, BSNL, Vi, and Jio for low latency.

RabbitMQ Queuing

High-throughput queue architecture to send millions of SMS without lag.

Live Delivery Reports

Track every message with real-time delivery insights and bounce logs.

Multi-Channel Failover

Auto-route undelivered SMS via WhatsApp or RCS to ensure delivery.

Volume Pricing

Bulk SMS Pricing Slabs

All plans include lifetime validity, DLT support, and access to developer APIs.

Starter Volume

INR 0.17 + GST / msg

25,000 SMS Quantity
Unlimited Credit Validity
Base Amount: ₹4,250
GST (18%): ₹765
Total: ₹5,015

Choose 25K Plan

Our Bulk SMS Service Categories

Tailored messaging categories for transactional security, marketing conversions, and service alerts in India.

Transactional SMS

Deliver critical notifications, booking confirmations, invoice alerts, and account updates instantly to registered customers across India.

OTP SMS Solutions

Ensure high-speed authentication OTP delivery within 2 to 5 seconds for user signups, logins, and payment verification.

Promotional SMS

Drive sales, promote special offers, discount coupons, and new product launches to target audiences during operational hours.

Service SMS

Send essential service updates, renewal reminders, policy changes, and appointment confirmations reliably.

DLT Panel Assistance

End-to-end guidance for registering Entity ID, Header Sender IDs, and Content Templates on telecom DLT portals in India.

White-Label Reseller Platform

Launch your own bulk SMS business across India under your brand with custom domain white-label access and reseller controls.

How to Activate Your Bulk SMS Campaign in India

Complete DLT Registration with any TRAI-approved telecom operator (Jio, Airtel, Vi, BSNL, Tata).
Gather Required Documents for DLT submission (Organization PAN, ID Proof, Address/Business Proof).
Create Your Account on CPaaS Studio Bulk SMS user panel.
Select a Suitable SMS Plan based on your campaign requirements and target volume.
Add Approved Sender ID & Templates to your portal.
Upload Your Contact List via CSV/Excel or integrate with our APIs.
Launch Your Campaign and track delivery live!

DLT Submission Document Checklist

1. Organization PAN Card

Company PAN card, or Proprietor's PAN card for sole proprietorship.

2. Authorized Person ID Proof

Aadhaar card / Passport / Voter ID signed with official company seal.

3. Valid Business Address Proof

MSME Certificate, Incorporation Certificate, Trade License, or Labour Registration.

4. Authorization Letter & Contact Details

Printed on official letterhead + official email ID and mobile number.

Sector Solutions

Industries We Serve Across India

Retail & E-Commerce

Order status, dispatch tracking, promotional discount alerts, and re-engagement campaigns across pan-India stores.

Banking & Fintech

Instant OTPs, transaction receipts, EMI payment reminders, and secure account alerts for banks and fintech platforms.

Healthcare & Pharma

Appointment confirmations, diagnostic report readiness alerts, and health updates across India.

Education & EdTech

Exam schedules, fee due notifications, course updates, and parent announcements for schools and online learning platforms.

Real Estate & Builders

New project launch alerts, site visit scheduling, and buyer follow-up messages across top metros and Tier-2 cities.

Logistics & Supply Chain

Real-time package dispatch alerts, driver tracking links, and delivery confirmation OTPs across India.

Why Businesses Across India Choose CPaaS Studio

15+ Years Industry Experience: Over a decade of reliable, results-driven SMS delivery architecture.
No Hidden Fees or Expiry: Pay only for what you use. No setup fees, and credits never expire.
Fast 24-Hour Onboarding: Get up and running quickly with our portal and expert DLT guidance.
24/7 Expert Support: Round-the-clock assistance for DLT compliance, APIs, and campaign optimization.

Ready to Start Sending?

Experience high-speed bulk SMS delivery with full DLT support and free trial credits.

Got Questions?

Frequently Asked Questions

What is DLT registration?

DLT (Distributed Ledger Technology) registration is a mandatory process introduced by TRAI (Telecom Regulatory Authority of India) to regulate commercial SMS and prevent spam. All businesses using a bulk SMS service provider in India must register on a telecom DLT platform to send SMS campaigns.

Why is DLT registration required?

DLT registration reduces spam, ensures sender transparency, and maintains telecom compliance. It protects recipients from unsolicited messages while enhancing the delivery rates and credibility of genuine business SMS campaigns.

Can I send SMS campaigns without DLT registration in India?

No. Sending promotional or transactional messages without completing DLT registration is strictly prohibited by telecom operators in India. As your bulk SMS provider in India, we assist you in completing DLT onboarding smoothly to avoid any disruption.

What are the operator DLT registration charges in India?

The standard registration fee set by major telecom operators in India is generally ₹5,000 + GST (TATA, Vi, Jio, Airtel, Videocon) or ₹3,000 + GST for BSNL. We guide all clients through selecting the most suitable operator portal during onboarding.

What are the types of Sender IDs (Header IDs)?

There are three main categories of Sender IDs:

Promotional (6-digit numeric): Used strictly for marketing and sales offers.
Service (6-character alphabetic): Used for service alerts, billing reminders, and updates (Service Inferred / Service Explicit).
Transactional (6-character alphabetic): Used exclusively for OTPs and banking transactions.

What documents are required for DLT registration?

The required documents include:

Company/Organization PAN Card (or Proprietor's PAN for sole proprietorship).
Authorized Person's ID proof (Aadhaar / Voter ID / Passport) with signature and company seal.
Business Proof linking company & authorized person (MSME Certificate, Registration Certificate, Trade License, Labour License, etc.).
Official Company Email ID & Mobile Number.
Authorization Letter printed on company letterhead.

Is SMS API integration with my CRM or application possible?

Yes! CPaaS Studio provides robust HTTP/REST APIs, webhooks, and sample SDK code allowing quick integration with CRMs, websites, mobile applications, and ERP software for automated trigger-based messaging.

What is the price of 1,000 SMS messages in India?

The price of 1,000 SMS messages depends on your total purchase volume slab and message type. Standard rates range between ₹0.12 and ₹0.25 per SMS in India (+ 18% GST). Contact our team for customized volume pricing for high-throughput enterprise requirements in India.

How can I send 1,000 or more messages at once?

With CPaaS Studio, simply log into your dashboard, upload your contact list in Excel/CSV format, select your approved DLT Sender ID and Content Template, and click Send or Schedule. You can send thousands of messages instantly within seconds.

Is Bulk SMS legal in India?

Yes, Bulk SMS is completely legal in India when compliant with TRAI regulations. This includes entity DLT registration, sending promotional content only to non-DND numbers within permitted hours (9 AM to 9 PM), and using registered templates for transactional alerts.

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