How do I send a message to several customers on WhatsApp without spamming?
Only write to consenting contacts, adapt the message to each one's status, use an approved template outside the 24-hour window, send gradually and respect STOP.
The app's broadcast lists are limited and only reach contacts who saved you. With the official API, a well-run campaign remains possible.
- Consent first: only contacts who wrote to you or agreed; attest it when launching.
- One message per contact status (new, qualified, appointment set…), personalised with the first name.
- Outside the 24-hour window, a Meta-approved template is required.
- Gradual sending: choose a careful or normal speed.
- STOP respected automatically, and never a new send to an unsubscribed contact.
- Follow the results: delivered, read, replies.
WhatzAI campaigns are reserved for the Pro and Agency plans.
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Updated 18 October 2026. Meta's rules change: if in doubt, check WhatsApp Business's official documentation.