How to Send WhatsApp Broadcasts Without Getting Blocked
To send personalized WhatsApp broadcasts at scale without getting blocked, only message customers who opted in, split your list into segments, personalize every message with names and purchase data, and use approved templates. Then watch your quality rating and send fewer, more relevant messages. Blocks and reports, not volume, are what get a number restricted.
A WhatsApp broadcast can reach thousands of customers in seconds, and most of them will read it. That's why it works so well for sales, launches and Black Friday.
It's also why WhatsApp guards it closely. Send the wrong message to the wrong people and customers block you. Then Meta pauses your templates and your reach shrinks right when you need it most.
This guide shows how to scale WhatsApp broadcasts safely: the rules Meta actually enforces, a 7-step process, and a checklist to run before every send.
Why do WhatsApp broadcasts get numbers blocked?
WhatsApp doesn't punish you for sending a lot of messages. It punishes you for sending messages people don't want.
Customers can block you, report you or tap to stop marketing messages. Each of those signals lowers your quality. Meta can then pause the templates you use, and WhatsApp may rate-limit businesses whose quality stays low.
The good news: the same quality signals work in your favor. Meta raises your messaging limit automatically when you send high-quality messages and use at least half your current limit over 7 days.
How to send personalized WhatsApp broadcasts at scale: 7 steps
1. Get clear opt-in first
Only message customers who gave you their number and agreed to hear from you. Meta requires the opt-in to clearly name your business and say the person is opting in to its messages.
The best places to ask are checkout, a website popup, your thank-you page and your email list. Tell people what they'll get, such as order updates, early access or offers. Meta also suggests separate opt-ins per message type, which lowers the risk of blocks.
2. Segment your list
Never send one message to everyone. Start with at least three groups: VIPs and repeat buyers, past customers, and subscribers who haven't bought yet. Then add behavior, like products viewed, cart value or last purchase date.
Smaller, relevant sends perform better. Fit Piggy reached a 95% open rate on segmented campaigns with Dondy.
3. Personalize beyond the first name
A first name is the minimum. Use the data your store already has: the product they looked at, their size, their last order or their city. "Your size in the linen shirt is back" beats "New arrivals are here" every time.
4. Use approved templates, and submit them early
Outside the 24-hour window after a customer messages you, you can only send pre-approved message templates. Every template is categorized as marketing, utility or authentication, and the category also affects pricing.
Before big sales like Black Friday, write and submit your templates at least a few weeks ahead, so approval never holds up a campaign.
5. Pace your sends and respect messaging limits
Meta limits how many unique customers you can message outside a conversation in a rolling 24 hours. New accounts start at 250, and limits grow to 2,000, 10,000, 100,000 and then unlimited as you send high-quality messages (Meta messaging limits). The limit applies to your whole business portfolio, not each number.
Meta also caps how many marketing messages one person can receive from businesses. So send at human hours in your customer's time zone, and plan 4 to 5 broadcasts per customer across a busy season instead of daily blasts.
6. Make opting out easy
Add a quick-reply button like "Stop promotions" to every marketing message, and honor it right away. WhatsApp's policy requires you to respect every opt-out request. A customer who can opt out in one tap is far less likely to block or report you.
7. Monitor quality after every send
Watch read rates, replies, opt-outs and your template quality in WhatsApp Manager. If a template drops to "Active - Low quality," stop the campaign and rewrite it. Route replies to your inbox or an AI agent so customers who answer get a fast response.
What does a good WhatsApp broadcast look like?
The same offer can feel like spam or like a message from a friend. Here's the difference:
Write like a person, put the offer in the first line, and give one clear next step.
Want every broadcast to look like the one on the right? Dondy fills in names, products and order data from your Shopify store automatically. Try Dondy free.
Pre-send checklist
Run this before every broadcast:
☐ Everyone in the audience opted in, and the opt-in named your business
☐ The audience is a segment, not your whole list
☐ The message uses at least one personal detail beyond the first name
☐ The template is approved and in the right category
☐ The offer is in the first line, with one link and one image
☐ A "Stop promotions" quick reply is included
☐ Send time is set to the customer's local time
☐ This customer hasn't had a marketing message in the last few days
☐ Someone (or an AI agent) is ready to answer replies
☐ You'll check read rates and template quality an hour after sending
Frequently asked questions
How many WhatsApp broadcast messages can I send per day? It depends on your messaging limit. New accounts can message 250 unique customers outside a conversation in a rolling 24 hours. The limit rises to 2,000, 10,000, 100,000 and then unlimited as you send high-quality messages.
Why does WhatsApp block business numbers? When customers block or report your messages, your quality drops. Meta can then pause your templates and limit how many people you can reach. Messages that customers didn't expect or ask for are the main cause.
Do I need opt-in to send WhatsApp broadcasts? Yes. You can only message people who gave you their number and agreed to receive messages from your business. The opt-in must clearly name your business.
What happens when a WhatsApp template is paused? Meta pauses a template that gets too much negative feedback or low read rates. The first pause lasts 3 hours, the second 6 hours, and a third disables the template.
How often should I send WhatsApp marketing messages? Less often than email. For a busy season like Black Friday, plan 4 to 5 messages per customer in total, and send everything else to smaller, more relevant segments.
Can I personalize WhatsApp broadcasts automatically? Yes. Tools connected to your store, like Dondy for Shopify, fill each message with the customer's name, products and order data, so every message in a broadcast is different.
Send your next broadcast with Dondy
Dondy connects WhatsApp to your Shopify store, so you can build segments from real purchase data, personalize every message and schedule broadcasts in a few clicks. Planning for Black Friday? Pair this guide with our abandoned cart playbook.
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