Procellari
5 min read

WhatsApp Business API, explained simply

What the API is, how it differs from the WhatsApp Business app, and what you need to start.

The WhatsApp Business Platform (often called the WhatsApp Business API) is Meta's official way for businesses to send and receive WhatsApp messages from software instead of a phone.

App vs. platform

  • The WhatsApp Business app runs on one phone (plus linked devices).
  • The platform is used through software like Procellari, so a whole team can work from one number.
  • With coexistence, a number can stay on the app while also being connected to the platform.

What you need

  • A Meta business portfolio (verification raises your limits).
  • A phone number you control.
  • A display name that matches your business.
  • A platform like Procellari to send, receive and automate.

Templates and the 24-hour window

You can reply freely for 24 hours after a customer messages you. To start a conversation — or reply after 24 hours — you send a message template that Meta has approved.

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