WhatsApp Business, explained without jargon.
API, coexistence, templates, 24-hour windows… What you need to understand before connecting your number.
WhatsApp Business API
Meta's official way for a company to use WhatsApp at scale: several agents on one number, templates, campaigns and automations.
Coexistence
Use the same number at once in the WhatsApp Business app on your phone and in the API. What you write from your phone also appears in Zinto.
WhatsApp QR
Connect a number by scanning a QR code, as in WhatsApp Web. It has no Meta pricing, but it is not an official connection and can lead to blocks if used for mass sending.
Message template
Message reviewed and approved by Meta. It is required to write first or to reply outside the 24-hour window.
24-hour service window
After the customer's last message you have 24 hours to reply with free-form messages. After that, you can only write to them with a template.
Free 72-hour window
If the customer writes to you from a Click to WhatsApp ad or the button on your Facebook page and you reply within 24 hours, messages in the next 72 hours have no Meta pricing.
Price per message
Since July 1, 2025 Meta charges for each delivered template, based on the category and the recipient's country.
Template categories
Marketing (promotions and news), utility (order or appointment notices), authentication (access codes) and service (customer replies).
Messaging limit
How many different customers you can contact with templates in 24 hours: 250, 2,000, 10,000, 100,000 or unlimited. It goes up with the quality and volume of your number.
Number quality
Meta's rating (high, medium or low) based on how customers react to your messages. If many block or report you, it drops.
Meta Business Partner
A company vetted by Meta to offer the WhatsApp API to other businesses. Connecting through a partner is the official route.
Opt-in
The customer's permission to receive your messages. Meta requires it before sending templates, especially marketing ones.
Click to WhatsApp
Facebook or Instagram ads with a button that opens a WhatsApp chat with your business.
Webhook
Automatic notice that Zinto sends to another system when something happens: a message arrives, a contact changes or a sale closes.