The purpose of the WhatsApp Cloud API is to send the OTP and custom messages to the user with the below two options
1. Send OTP via WhatsApp
Use it as the delivery channel for
One-Time Password (OTP) authentication instead of SMS. This means when a user needs to verify their identity, the OTP code is sent to them via a WhatsApp message from your own WhatsApp Business number.
How to set it up:
• Go to
Authentication Methods → One-time Password
• Select the WhatsApp Cloud API connector as the delivery connector
• Optionally customize the OTP message template
2. Send Custom WhatsApp Messages in Flows
Use it as a connector
step inside a flow to send any custom WhatsApp message at any point during authentication — not just OTPs. For example, you could send a welcome message, a notification, or any other custom content to the user's WhatsApp after they sign up.
How to set it up:
In the Flow editor, click
+ →
Connector → choose
WhatsApp Cloud API
• Configure the
To field (e.g.,
{{user.phone}}
) and the message body