The WhatsApp Business API, explained simply
The WhatsApp Business app is for people. The WhatsApp Business API is for software: it lets bots send and receive messages for your business.
What it lets you do
Send confirmations, reminders and updates automatically, answer questions with a chatbot, and let several team members share one number.
How you get access
You apply through a Business Solution Provider or directly through Meta. You need a verified business and a phone number that is not already in the regular app.
What it costs
Providers charge per conversation or per message, and the price depends on the country and the message type. Many small businesses spend a small monthly amount.
Rules to follow
Message people who have agreed to hear from you, use approved templates for first contact, and give an easy way to stop.