WhatsApp Business API guide for sales teams (2026)
The WhatsApp Business API lets teams message at scale with approved templates, opt-in, and a 24-hour conversation window. It's powerful for warm follow-up — and strictly governed. Here's how it works.
Short answer: the WhatsApp Business API lets businesses message contacts at scale, but only within Meta's rules: pre-approved message templates to start a conversation, opt-in from the recipient, and a 24-hour customer-service window (opened when the contact replies) during which you can send free-form messages. It's excellent for warm follow-up and notifications — not for cold blasting, which gets numbers banned fast.
How it works
- Get a WhatsApp Business Account + a number via a BSP (provider).
- Submit templates for approval (utility/marketing categories).
- Capture opt-in before messaging.
- Open conversations with an approved template; the recipient's reply opens the 24h window for free-form replies.
- Honour opt-out as a cross-channel suppression.
Why use it
For SMB B2B, WhatsApp gets read where email doesn't — done with consent, reply rates beat email. Done as spam, the number is suspended.
Autocloz dispatches only approved WhatsApp templates, tracks opt-in, and manages the conversation window, honouring STOP everywhere.
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