Numbers get banned for two reasons: using unofficial bulk-sending tools, and messaging people who did not ask to hear from you. Avoid both and bulk WhatsApp is safe — and it works better, because people read messages they wanted.
Why numbers get banned
- Unofficial bulk-sender software, browser extensions and “WhatsApp blasters” that drive the normal WhatsApp app. They break WhatsApp's terms, and the number is the one that pays.
- Messaging bought or scraped lists. People who do not know you block and report you, and enough reports restrict the number.
- Sending the same promotional message too often, or with nothing worth reading in it.
The official way: the WhatsApp Business API
The WhatsApp Business API (through a provider such as Comniket) is the only approved way to message thousands of customers. Business-initiated messages use templates that Meta approves, every message is tracked, and customers can opt out.
Get opt-in first
Opt-in means the customer agreed to receive WhatsApp messages from you. Ask clearly, at a moment they want something from you:
- A checkbox on your website form or checkout: “Send me updates on WhatsApp”.
- A customer messaging you first, from an ad, a QR code or your website.
- A clear question at the counter or on a call, recorded against their number.
Quality rating and messaging limits
Meta gives every number a quality rating based on how people react to your messages — blocks and reports pull it down. A new number can message a limited number of people a day; the limit rises as you send good-quality messages and verify your business, and a falling rating can bring it down again.
Meta may also hold back a marketing message from someone who has recently received many marketing messages from businesses. A smaller, interested list beats a big cold one.
A checklist for every campaign
- Only opted-in contacts; never a bought list.
- Use the customer's name and something relevant to them.
- Say who you are in the first line.
- One clear action; keep it short.
- Include an opt-out, such as “Reply STOP to stop these messages” — and honour it.
- Send at sensible hours, and not more than your customers want.
- Remove numbers that never read your messages.