What is bulk SMS and how does it work?

Our bulk SMS platform enables businesses to send Transactional SMS, Promotional SMS, OTP SMS, Voice, and WhatsApp messages. We offer API integration, DLT compliance, and real-time delivery reports.

Can I send SMS to DND numbers?

Yes, but only transactional or service-based messages can be sent to DND numbers. Promotional messages are blocked for users registered under DND preferences.

What is a transactional SMS (Service Implicit) in India?

Transactional SMS refers to messages sent to customers containing important information such as OTPs, alerts, or order confirmations. These messages are delivered even to DND numbers and are regulated under TRAI guidelines.

How do you protect my data and privacy?

We use SSL encryption, secure APIs, and follow TRAI's DLT protocols to ensure your data and messages are protected during transmission.

What is promotional SMS (Service Explicit) and when can it be sent?

Promotional SMS is used for marketing offers, discounts, and advertisements. In India, promotional messages can only be sent to non-DND numbers and within permitted time windows, typically 10 AM to 9 PM as per TRAI regulations.

Is bulk SMS secure for sending OTPs?

Yes, bulk SMS is widely used for OTP delivery due to its speed and reliability. However, it should be used with secure APIs and proper authentication mechanisms.

What is DLT registration and why is it required?

DLT (Distributed Ledger Technology) registration is a mandatory process introduced by TRAI to prevent spam SMS. Businesses must register their sender ID, templates, and headers on a DLT platform before sending SMS in India.

How much does bulk SMS cost in India?

Bulk SMS pricing in India typically ranges from ₹0.10 to ₹0.25 per SMS, depending on volume slabs.

How can I send SMS using API?

You can send SMS via API by integrating your system with an SMS gateway provider. Most providers offer REST APIs where you send parameters like mobile numbers, message content, and sender ID to trigger SMS delivery.

What is the difference between Service Implicit SMS and Service Explicit SMS?

Service Implicit SMS is used for important alerts and is delivered to all users, including DND numbers. Service Explicit SMS is used for marketing and is restricted to non-DND users and specific time windows.

Bulk SMS Gateway · India

The Bulk SMS Gateway Hub Indian Businesses Route Through

SMSGatewayHub is a DLT-compliant bulk SMS gateway based in India, sending transactional, promotional, OTP and voice SMS over direct operator connections — and you only pay for messages that actually deliver.

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ISO 27001 Certified
SOC 2
TRAI DLT Compliant
In business since 2009

OTP: 482913 is your verification code

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Delivered ✓

In short: SMSGatewayHub is an independent, India-based bulk SMS gateway hub offering transactional, promotional, OTP/2FA, voice and RCS messaging through direct telecom operator routes, certified ISO 27001, ISO 9001:2015 and SOC 2, with full TRAI DLT compliance.

Everything You Need From One Bulk SMS Gateway Hub

One account, one API, one dashboard — for every kind of SMS your business sends.

Transactional SMS

Order updates, alerts and confirmations delivered over priority routes with real-time status reports.

Promotional & Marketing SMS

Bulk campaigns with scheduling, DLT-approved templates and delivery analytics built in.

OTP & 2FA

High-priority OTP routing for logins, payments and verification flows.

Voice SMS

Automated voice broadcasts for alerts and reminders, alongside your text campaigns.

RCS Messaging

Rich cards, carousels and verified branding with automatic SMS fallback.

Explore RCS →

DLT Registration Support

Guided entity, header and template registration so campaigns don't get stuck at TRAI.

Get Started in 3 Steps

Create your accountSign up and get sandbox API keys instantly — no waiting to start testing.
Complete DLT registrationRegister your entity, header and templates with TRAI — our team guides you through every step.
Go liveSend your first bulk SMS via REST API, SMPP or the web panel in minutes.

Built for Every Industry That Sends at Scale

E-commerce & D2COrder confirmations, shipping updates, cart-recovery campaigns.

Banking & FintechOTP, transaction alerts and fraud notifications on priority routes.

HealthcareAppointment reminders and patient alerts.

Logistics & DeliveryReal-time dispatch and delivery status updates.

EducationAdmissions, exam alerts and parent notifications.

Government & ElectionsLarge-scale voter and citizen outreach. Learn more →

Enterprise-Grade Security & Compliance

Every message and every account is handled under independently audited security standards.

ISO 27001 ISO 9001:2015 SOC 2 VAPT Assessed TRAI DLT Compliant

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SMSGatewayHub vs Other Bulk SMS Gateway Providers in India

Searching for a bulk SMS gateway hub in India and landed here from a search for "SMS India Hub" or "SMSIndiaHub"? SMSGatewayHub (smsgatewayhub.com) is a separate, independent company — in business since 2009 and independently certified ISO 27001, ISO 9001:2015 and SOC 2. Here's what a bulk SMS gateway hub should offer, and where SMSGatewayHub stands:

What to look for	SMSGatewayHub	Typical Other Providers
Direct telecom operator connectivity	Yes	Often routed via resellers
Pay only for delivered SMS	Yes	Not always disclosed upfront
Independent security certification (ISO 27001, SOC 2)	Yes	Varies by provider
Guided TRAI DLT registration	Yes	Often self-service only
Transactional, promotional, OTP, voice & RCS in one account	Yes	Often split across separate tools
Years in business messaging	17+ years (since 2009)	Varies

"Typical Other Providers" reflects common patterns across the bulk SMS gateway market in India, not any single named competitor.

Frequently Asked Questions

A bulk SMS gateway hub is a single platform that routes transactional, promotional, OTP and voice SMS to mobile networks at scale, usually through direct telecom operator connections rather than third-party resellers, with delivery reporting and DLT-compliant sending built in.

No. SMSGatewayHub (smsgatewayhub.com) is an independent, ISO 27001, ISO 9001:2015 and SOC 2 certified bulk SMS gateway provider based in India, in business since 2009. It is a separate company from SMS India Hub, SMSIndiaHub or any similarly named platform. If you are comparing bulk SMS gateway hubs in India, SMSGatewayHub offers direct operator connectivity, pay-only-for-delivered pricing and guided TRAI DLT registration.

Yes. Every message sent through SMSGatewayHub follows TRAI's Distributed Ledger Technology (DLT) framework, and the team assists with entity registration, header registration and template approval.

Yes. SMSGatewayHub bills on a pay-only-for-delivered-SMS model, so undelivered messages are not charged. See how this works →

Yes. Transactional SMS, promotional/marketing SMS, OTP and 2FA codes, and voice SMS all run through the same SMSGatewayHub account, API and dashboard.

Yes. SMSGatewayHub offers RCS messaging with rich cards, carousels and verified branding, with automatic SMS fallback when RCS is not available on the recipient's device.

DLT entity and template registration timelines depend on the telecom operator portal, but SMSGatewayHub's team guides businesses through entity, header and template registration to avoid rejections and delays.

Ready to Route Your Bulk SMS Through a Hub Built for Scale?

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