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WhatsApp Business API: What It Is and When You Need It

6 November 2026 · WhatsApp API

By the mFirst team ·

The free WhatsApp Business app suits a small shop answering messages on one phone. The WhatsApp Business Platform (the API) is for companies that need several agents, automation, CRM integration or large-scale notifications.

How it works

  • Customers must opt in before you message them
  • You start conversations with pre-approved message templates
  • Free-form replies are allowed within the customer service window after a customer writes to you
  • Meta charges by message category, so check current rates before budgeting

Common uses

  • Order and delivery updates
  • Appointment reminders and payment links
  • Lead follow-up
  • Support chat with handover to agents

Getting started

Expect business verification with Meta, a phone number that is not already registered on WhatsApp, template approval, and integration with your CRM or helpdesk.

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