Quick answer: A WhatsApp business bulk message sender lets you send one approved message to many opted-in customers at once. The safe way is the official WhatsApp Business API through a Business Solution Provider like AiSend, not a browser extension, because extensions can get your number banned. For the full overview, see our bulk WhatsApp message sender guide.
What is a WhatsApp business bulk message sender?
It is a tool that sends the same message, often personalised, to a list of customers. Businesses use it for:
- Offers and sale announcements
- Order and delivery updates
- Appointment and payment reminders
- Abandoned cart messages
- Event invitations
The risk depends on how the tool works. Some tools automate the regular WhatsApp app. Others use the official API. Only the second type is approved. Read why numbers get banned.
Two kinds of bulk senders
| Unofficial extension or sender | Official API sender | |
|---|---|---|
| How it works | Automates WhatsApp Web or the app | Uses the official WhatsApp Business API |
| Allowed by WhatsApp | No | Yes |
| Ban risk | High | Low with opt-in and good content |
| Message format | Plain text | Approved templates with buttons and media |
| Team inbox | None or limited | Shared inbox |
| Reports | Basic | Delivery, read, reply, click |
| Best for | Not recommended for business | Businesses that want to scale |
Details: unofficial vs official WhatsApp API.
How official bulk messaging works in AiSend
- Connect your number to the official WhatsApp Business API through AiSend. See what a BSP does.
- Import your contacts from a CSV or your CRM, with opt-in.
- Create a template with personalisation, a CTA or quick-reply buttons.
- Submit it for approval. Meta reviews templates.
- Pick your audience and segment by tags or attributes.
- Send now or schedule. AiSend supports scheduling up to two months ahead.
- Track results. See read, reply and click rates per campaign.
- Reply from the shared inbox or let a chatbot handle common questions.
Features that matter for bulk campaigns
- Personalised messages using customer name and fields
- Buttons for call, link and quick replies
- Image, video and document support in templates
- Scheduling and daily sending limits that grow with good quality
- Shared team inbox with chat routing
- No-code chatbot and AI agents
- Click-to-WhatsApp ads and WhatsApp forms
- Analytics for every campaign
Best practices for bulk WhatsApp messages
- Send only to people who opted in.
- Use clear, useful content. Offers, updates, reminders.
- Segment your list. A message to everyone performs worse.
- Add a way to opt out.
- Send at sensible times and not too often.
- Keep your templates short and specific.
- Watch blocks and replies, and pause if they rise.
- Warm up a new number before large sends.
If your number was already restricted, see what to do if your WhatsApp number is banned.
Sample bulk message templates
Order update "Hi {{1}}, your order {{2}} has been shipped and will reach you by {{3}}. Track here: {{4}}"
Appointment reminder "Hello {{1}}, this is a reminder of your appointment on {{2}} at {{3}}. Reply YES to confirm or NO to reschedule."
Offer "Hi {{1}}, our {{2}} sale is live until {{3}}. Get {{4}} off your next order. Shop now: {{5}}"
Always submit templates for approval and follow the WhatsApp Business Messaging Policy.
What does bulk WhatsApp messaging cost?
Cost has a platform part and a Meta per-message part. Marketing, utility and authentication messages are priced differently.
See pricing and start on the free plan to test.
Frequently asked questions
Is bulk messaging allowed on WhatsApp? Yes, through the official WhatsApp Business API with opt-in contacts and approved templates. Sending bulk messages from the regular app or an extension is not allowed.
Can I send bulk WhatsApp messages from the WhatsApp Business app? The Business app has limited broadcast features and is meant for small-scale use. For large campaigns, use the official API.
How many bulk messages can I send per day? Official API accounts have messaging limits that increase as quality stays good.
Do I need opt-in? Yes. Opt-in protects your quality rating and follows the Business Messaging Policy.
Can I send images and buttons in bulk? Yes, in approved templates. Supported formats depend on the template type.
Is there a free way to send bulk WhatsApp messages? AiSend offers a free plan and trial, and Meta may charge per message for some message types.
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