
In 2025, businesses are increasingly turning to messaging platforms to engage with customers, and two prominent options are SMS Broadcast and WhatsApp Broadcast. SMS boasts an impressive 98% open rate, with 90% of messages being read within three minutes. WhatsApp, on the other hand, offers a 98% open rate and a click-through rate ranging from 15% to 80%, depending on the industry. These statistics highlight the effectiveness of both channels in reaching and engaging audiences.
However, the choice between SMS and WhatsApp Broadcast depends on various factors, including your target audience, message content, and desired level of interactivity. Understanding the strengths and limitations of each platform is crucial for crafting an effective communication strategy.
SMS Broadcast is a marketing strategy that involves sending bulk text messages to a large community of recipients simultaneously. This method is typically used by businesses to share promotions, updates, or important notifications with customers directly to their mobile phones.
An SMS broadcast is essentially a one-way communication where businesses send out a message to a list of customers or potential clients, who are then able to read the message on their mobile devices. This is done without the need for recipients to interact, making it a simple and efficient way to reach a broad audience in a short time.
Why is SMS broadcast so popular?
While SMS may seem basic compared to more interactive channels like email or social media, it remains a reliable and effective communication tool due to its wide reach, high open rates, and simple nature.
Suggested read: How to Use Meta Chat for Conversations and Support
Next, let's take a look at WhatsApp Broadcast, which offers unique features beyond SMS.
WhatsApp Broadcast is a tool that allows businesses to send a message to different contacts at once, without the recipients knowing who else received the message. It’s like sending a group message, but each recipient sees it as a private chat. This feature is often used for sending updates, promotional content, and important announcements, while keeping the communication personalized and discreet.
Unlike SMS broadcasts, which require phone numbers and have limitations in terms of media content, WhatsApp Broadcast takes things a step further by allowing you to send multimedia—images, videos, documents, and even voice messages—all through an app that millions of people already use daily.
Why is WhatsApp Broadcast so effective?
WhatsApp Broadcast is a great tool for businesses to communicate important messages with customers directly and in a more engaging way than SMS, while also maintaining a sense of privacy.
Now that we’ve seen both options, let's dive into how they compare.
While both SMS and WhatsApp Broadcast serve the same purpose—sending messages to a large group of recipients—there are distinct differences in how they work and their overall effectiveness. Let’s break down these differences:
|
Feature |
SMS Broadcast |
WhatsApp Broadcast |
|---|---|---|
|
Delivery Mechanism |
Uses cellular networks (no internet required). |
Operates over the internet (requires internet connection). |
|
Rich Media Support |
Text-only messages (no images, videos, or interactive content). |
Supports text, images, videos, documents, links, and interactive buttons. |
|
Reach and Audience |
Can reach any phone with a mobile number, including feature phones. |
Only reaches users who have WhatsApp installed. |
|
Engagement |
Limited engagement; one-way communication. |
High engagement with two-way communication, easy replies, and interactive features. |
|
Opt-In Requirements |
Requires explicit consent (opt-in) for promotional messages. |
Requires opt-in, and recipients must be saved in the business’s contact list. |
|
Cost |
Can be expensive, especially for international messages or large audiences. |
Free for businesses, making it cost-effective. |
|
Message Privacy |
Recipients are aware it’s a mass message (no privacy). |
Messages are private to each recipient, with no visibility of others receiving it. |
While both SMS Broadcast and WhatsApp Broadcast serve to reach large audiences, WhatsApp Broadcast offers far more flexibility, media options, and engagement potential.
Also read: Harnessing Social Media for Customer Engagement: The Power of Zoko's Messaging Integrations
To make the right decision for your business, it's essential to understand when each broadcast method should be used.
When deciding between SMS Broadcast and WhatsApp Broadcast, it's essential to consider the type of message you're sending, the preferences of your audience, and the overall communication objectives. Both have their unique strengths, and using them correctly can heavily impact the effectiveness of your outreach.
|
Criteria |
SMS Broadcast |
WhatsApp Broadcast |
|---|---|---|
|
When to Use |
||
|
Reach and Accessibility |
Broad reach with universal accessibility. Works for feature phones and those without internet. |
Best for tech-savvy, smartphone users. Requires an internet connection. |
|
Urgency and Time-Sensitivity |
Ideal for urgent, time-sensitive messages like reminders, alerts, or offers. High open rates. |
Not as immediate as SMS, but effective for engaging, less time-sensitive communications. |
|
Official and Compliance Messaging |
Preferred for legal, compliance, or financial communications. Seen as more official and secure. |
Less commonly used for official messages; better for more interactive and engaging content. |
|
Multimedia Content |
Limited to text, links, and basic media. |
Supports images, videos, voice notes, documents, etc., ideal for rich content like product demos or tutorials. |
|
Personalization and Engagement |
Less interactive; mostly one-way communication. |
Allows for personalized interactions, quick replies, and customer relationship-building with dynamic features. |
|
Customer Support and Interaction |
Not suited for interactive, two-way conversations. |
Excellent for real-time support, immediate responses, and engaging in ongoing conversations |
Let’s explore some of the best practices for using both SMS and WhatsApp broadcasts effectively.
When it comes to SMS and WhatsApp Broadcasts, both channels offer incredible potential for driving engagement and conversions, but each requires a thoughtful, strategic approach to ensure maximum effectiveness.
Let’s get into some essential best practices for both platforms, keeping in mind the nuances of each:
Brevity is key. Customers won’t read through long-winded paragraphs, especially when it’s delivered in a broadcast format. Keep your messages short, to the point, and focused on a single goal. With SMS, you’re restricted by the 160-character limit, so every word should serve a purpose. For WhatsApp, while there’s more room for text, remember that attention spans are short, deliver value quickly.
For example, SMS could look like: "20% off on all jackets this weekend only! Shop now: [link]"
And a WhatsApp message might include a call to action, an image, and a link:
"Hey [First Name], check out our new jacket collection! Enjoy 20% off today—tap below to shop."
People check their phones at different times throughout the day, and your message might get lost if you send it at the wrong moment.
For SMS, early mornings and late afternoons are often best for business updates or promotions. WhatsApp messages, on the other hand, tend to perform better in the late evenings and weekends when users are more likely to engage with informal content.
Pro Tip: Use the tools that allow you to schedule messages based on time zones, customer behavior, and preferred engagement windows. This ensures you hit the right inbox at the right time.
If your goal is to increase conversions, segmentation is crucial. Not all customers are the same, and messaging that’s personalized and relevant will always perform better than generic broadcasts. With both SMS and WhatsApp, segment your audience based on behavior, past interactions, location, or preferences.
For example, target loyal customers with exclusive offers or promotions, while new subscribers might appreciate a warm welcome message or introductory offer. A tailored approach increases engagement and improves customer retention.
WhatsApp is a more conversational platform than SMS, so use it to your advantage. Instead of sending just promotional text, create an interactive experience. You can use WhatsApp to run polls, quizzes, or even allow customers to browse your catalog right from the app.
For SMS, your options are more limited, but you can still direct customers to your website or encourage them to reply with a keyword to trigger specific actions.
For example, a WhatsApp broadcast could feature a quick poll like: "What color do you prefer? Reply 1 for Red, 2 for Blue, 3 for Green!"
This kind of interaction fosters a more engaging experience, making customers feel more connected to your brand.
Last but not least, ensure that your customers feel safe and valued. Be transparent about how their data is used and make sure your messaging reflects the care you take with their personal information. For both SMS and WhatsApp broadcasts, always make sure customers can easily unsubscribe if they no longer wish to receive communications.
For example, include an opt-out option at the end of your WhatsApp messages like: "Reply STOP to opt-out from further messages."
And for SMS: "Reply STOP to unsubscribe."
By respecting privacy and offering valuable content, you will build trust with your customers.
To effectively leverage these platforms, consider your business objectives and audience preferences. Incorporating best practices, such as segmenting your audience and crafting compelling messages, can enhance the effectiveness of your broadcasts.
Ready to elevate your messaging strategy? Zoko offers a comprehensive platform to manage both SMS and WhatsApp Broadcasts, enabling seamless communication with your customers.
Start today and experience the difference!
1. Can I track the efficiency of my SMS or WhatsApp Broadcasts?
Yes, both SMS and WhatsApp Broadcasts can be tracked through various analytics tools that measure open rates, click-through rates, and engagement levels, helping you assess the performance of your campaigns.
2. Is there a limit to how many recipients I can send a WhatsApp Broadcast to?
Yes, WhatsApp has a limit on the number of recipients for a broadcast list, typically up to 256 contacts. However, you can create multiple lists if needed to reach a larger audience.
3. Do I need special software to send SMS or WhatsApp Broadcasts?
Yes, both SMS and WhatsApp Broadcasts require specific software platforms or services that facilitate bulk messaging, such as third-party SMS gateway providers or WhatsApp Business API solutions.



