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Bulk Messaging: A Complete Guide

Bulk Messaging: A Complete Guide

Profile Headshot of Kunal Suryawanshi
Kunal Suryawanshi

5
mins read

September 16, 2024

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Key Takeways

According to a report, 75% of customers opt for receiving promotional messages from brands. One of the most effective ways for businesses to leverage text messaging is through Bulk SMS.

Bulk SMS or mass texting, allows companies to communicate with large audiences simultaneously, making it easier and more cost-effective to reach thousands or even millions of customers at once. This method allows companies to use messaging as a way to create personalized experience at scale. 

What is Bulk SMS?

Bulk SMS, often referred to as text blasts, is the process of sending a large number of text messages to a group of recipients at once. This could be anything from promotional offers and product launches to reminders and updates.

With an impressive open rate of around 94%, SMS marketing is one of the most reliable ways to ensure that your message is seen by your audience. Unlike email, which often gets lost in crowded inboxes, SMS offers a more direct and immediate way to reach customers.

Businesses use Bulk SMS for the following purposes

  1. Promotional and Event Updates

Businesses use bulk SMS and group texting to send promotional codes, announce flash sales and share event updates, ensuring timely communication with customers.

  1. Personalized Engagement

Despite being sent in bulk, these messages can be personalized with the recipient’s name or other details, enhancing customer engagement and connection.

  1. Appointment and Reminder Notifications

Service providers and organizers use bulk SMS to remind customers of appointments or send last-minute event updates, helping reduce no-shows and keep customers informed.

The Benefits of Bulk SMS

  1. Quick and Efficient Reach

Bulk SMS allows businesses to instantly reach a large audience which is required when sending OTPs, making it perfect for time-sensitive communications like flash sales, user authentication, emergency updates or new product launches.
Due to this, businesses mostly prefer OTP SMS verification over any other method of authentication.

  1. Cost-Effective Marketing

Compared to traditional marketing channels, Bulk SMS is relatively inexpensive. It offers a high return on investment, enabling businesses to engage thousands or even millions of customers with minimal cost.

  1. Personalization

Despite being sent in bulk, SMS messages can be personalized with the recipient’s name or other details, increasing engagement and making the communication feel more tailored to each individual.

  1. High Open Rates

SMS messages typically have much higher open rates compared to emails or other forms of digital marketing. This ensures that your message is more likely to be seen and acted upon by the recipient.

  1. Trackable Results

SMS service providers offer tools to track metrics like open rates, click-through rates and conversions. This data helps businesses measure the success of their campaigns and make informed decisions for future marketing efforts.

Who is Using Bulk SMS and Why?

Bulk SMS is used by businesses as

1. Retail and E-commerce

Retailers use SMS to promote sales, offer discounts and send personalized recommendations based on customer behavior. 

For example, during Black Friday, a retail store might send out a message like,
“Black Friday starts now!
Save 50% on EVERYTHING + free shipping on all orders.
Use code BF50 at checkout!” 

This message is simple, direct, and creates a sense of urgency that can drive immediate action.

2. Finance and Banking

Banks and financial institutions use SMS to send transaction alerts, reminders for upcoming payments, sending OTPs and security notifications. 

For example, Xoom, a digital money transfer provider, uses bulk SMS to send real-time transaction notifications to both the sender and the recipient, providing peace of mind and eliminating the need for follow-up.

3. Healthcare

Healthcare providers use bulk SMS to send appointment reminders, health tips and alerts about upcoming events or vaccination drives. This not only helps reduce no-shows but also ensures that patients are well-informed and engaged with their health providers.

4. Events and Entertainment

Event organizers use SMS to send out invitations, reminders and last-minute updates when running SMS campaigns. This ensures that attendees are informed of any changes and can be reminded of important details, such as start times or location changes.

Real-World Examples of Bulk SMS in Action

  1. Nike

Nike uses Bulk SMS to promote new product launches and exclusive offers to their loyal customer base.
For example, when launching a new sneaker, Nike sends bulk SMSs to inform customers of the release date and provide early access to purchase. This approach helps in creating hype and driving immediate sales, especially among their most dedicated fans.

  1. Amazon 

Amazon uses bulk SMS to send delivery updates and order confirmations to customers. By providing real-time tracking information and delivery notifications, Amazon ensures a seamless shopping experience.
Additionally, during major sales events like Prime Day, Amazon uses SMS to alert customers about flash deals, encouraging quick purchases and boosting sales.

  1. McDonald’s 

McDonald’s uses bulk SMS to promote limited-time offers and special deals.
For instance, during national events like the Super Bowl, McDonald’s sends out messages with special promotions tied to the event. This strategy helps to increase customer visits and drive sales during key periods, enhancing the effectiveness of their marketing campaigns.

  1. Starbucks

Starbucks uses bulk SMS as part of its rewards program, sending personalized offers and discounts directly to members’ phones. For example, they may send a message offering a discount on a customer’s favorite drink on their birthday. This personalization helps to increase customer loyalty and encourages repeat visits, driving sales across their locations.

Sending Bulk SMS

Following are the steps to send Bulk SMS

  1. Build Your List 

Collect contact details with consent through online forms, social media or in-store sign-ups.

  1. Select a Provider

Choose an SMS service with features like scheduling, analytics and personalization. With Message Central’s developer friendly APIs, you can easily integrate and start using SMS services for your campaigns.

  1. Acquire a Short Code

Obtain a short code for high-volume messaging to avoid spam filters.

  1. Write Your Message

Keep it concise, clear and include a strong call-to-action within 160 characters.

  1. Execute and Monitor

Send your message and track performance metrics like delivery and open rates using an SMS dashboard.

Bulk Messaging with Message Now

Message Now is an SMS API provider by Message Central. Using the platform, you can: -

a. Send SMS globally

b. Get the best SMS routes powered by direct operator connectivity

c. Improve ROI through real time analytics

d. Comprehensive API documentation

e. 24/7 customer support

Frequently Asked Questions

How do I choose the right OTP service provider?

When selecting an OTP SMS service provider, focus on:

  • Delivery reliability and speed
  • Global coverage and local compliance
  • Multi-channel support and fallback
  • Ease of integration
  • Pricing transparency

The right provider should not just send OTPs but ensure they are delivered consistently across regions and networks.

Not all OTP SMS service providers are built the same.

Some optimize for cost, others for flexibility but very few balance delivery reliability, global coverage and ease of use. And that balance is what actually impacts whether your users receive OTPs on time.

If OTP is critical to your product, focus on:

  • reliable delivery (not just sending)
  • multi-channel fallback
  • scalability across regions

Try It for Yourself

Why is multi-channel OTP important?

Relying only on SMS can lead to failed verifications due to:

  • network issues
  • telecom filtering
  • device limitations

Multi-channel OTP systems (SMS + WhatsApp + voice) improve success rates by automatically retrying through alternative channels if one fails.

What is the best OTP SMS service provider in India?

Some of the commonly used OTP SMS service providers in India include MSG91, Exotel and 2Factor.

That said, India has additional challenges like DLT compliance and operator filtering. Platforms that handle these internally while also offering fallback options tend to provide more consistent OTP delivery.

Which is the cheapest OTP service provider?

Providers like Fast2SMS and 2Factor are often considered among the cheapest OTP service providers, especially in India.

However, lower pricing can come with trade-offs such as:

  • lower route quality
  • higher delivery delays
  • limited fallback options

For mission-critical OTP flows, reliability often matters more than just cost.

Which is the best OTP service provider in 2026?

The best OTP service provider depends on your use case.

  • For global scale and flexibility: Twilio, Infobip
  • For cost-effective APIs: Plivo
  • For India-focused SMS OTP: MSG91, Exotel

However, platforms like Message Central stand out by balancing global coverage, multi-channel fallback and ease of deployment, making them suitable for businesses that prioritize delivery reliability.

What is an OTP service provider?

An OTP service provider enables businesses to send temporary verification codes to users via channels like SMS, WhatsApp or voice to authenticate logins, transactions or sign-ups.

Modern OTP SMS service providers go beyond just sending messages, they ensure reliable delivery using optimized routing, retries and sometimes multi-channel fallback.

Ready to Get Started?

Build an effective communication funnel with Message Central.

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