How SMS Broadcasting Works: Everything You Need to Know

Reaching your audience quickly matters, especially when you're sharing a time-sensitive update like a sale, event, or reminder. SMS remains one of the most dependable ways to connect with people directly on their phones. That’s where SMS broadcasting services comes into play.

So, what exactly is SMS broadcasting, how does it work, and why do so many businesses rely on it? In this blog by Online dot Marketing, we’ll explain everything in clear and simple words—even if this is your first time hearing about it.

What is SMS Broadcasting?

SMS broadcasting is a method businesses use to send one message to many people at the same time through SMS (Short Message Service). Instead of sending messages one by one, you can reach hundreds or thousands of contacts with a single click.

Companies use SMS broadcasting to send:

• Offers and promotions

• Event or payment reminders

• Alerts and updates

• Customer messages

• OTPs and verification codes

How Does SMS Broadcasting Work?

Here’s how the process usually works:

1. Collect Phone Numbers
Businesses gather customer numbers through forms, past purchases, sign-ups, or events.

2. Choose a Bulk SMS Platform
A reliable SMS service provider is selected. The platform allows uploading contacts, writing messages, and sending them out in bulk.

3. Write the Message
Messages are short (up to 160 characters), clear, and often include a call-to-action like “Call us,” “Visit now,” or “Shop today.”

4. Send the SMS
Once contacts and the message are ready, the SMS is sent to everyone on the list. Most platforms offer delivery reports to track how many people received the message.

5. Get Replies (Optional)
Some messages ask for a response—like “Reply YES to confirm” or provide a contact number for follow-up.

Why Do Businesses Use SMS Broadcasting?

Here are a few reasons businesses prefer SMS broadcasting:

• Instant delivery to mobile phones

• 90%+ open rate—much higher than email or social media

• Affordable pricing for small & large campaigns

• No internet required, so you can reach users in all areas

• Simple setup—just text, phone numbers & a platform

Types of SMS Used in Broadcasting

There are mainly two types of SMS businesses send:

1. Promotional SMS
Used to promote offers, sales, discounts, festive deals, or new product updates.

2. Transactional SMS
Sent to share important updates like OTPs, order details, appointment alerts, or account information.

Common Industries That Use SMS Broadcasting

SMS broadcasting is used across various industries. Here are some common examples:

• Retail & E-commerce – Announce discounts, confirm orders, share delivery info

• Education – Notify parents, share schedules, send announcements

• Healthcare – Send reminders, updates, and health tips

• Banks & Finance – Share OTPs, alerts, and promotional messages

• Events & Entertainment – Confirm tickets and send event reminders

Is SMS Broadcasting Legal in India?

Yes, businesses can send SMS campaigns, but they must follow TRAI rules. You need to register with a DLT platform and get customer consent. Promotional SMS is usually allowed only between 9:00 AM and 9:00 PM.

Best Practices to Follow

To make your SMS campaigns effective, here are a few simple tips:

• Always ask customers to opt in

• Keep messages short, simple & clear

• Avoid sending too many messages

• Include a call-to-action

• Test the message before sending to everyone

• Choose a trusted SMS platform for better delivery

Final Words

SMS broadcasting is still one of the fastest & most reliable ways to reach people. No fancy tools needed—just a message and a list of contacts. Whether you're running a small shop or a growing company, SMS helps you stay connected in real-time.

At ODM, we make it easy for you to get started with bulk SMS campaigns. If you're looking for an affordable & trustworthy SMS broadcasting service, our team is ready to help.