Send a simple text message to a specific phone number via WhatsApp.Important | 24-Hour Customer (Service Window)
Simple text messages are subject to Meta's customer service window policy. You can only send free-form text messages within 24 hours of the customer's last message to your business. This window starts or refreshes whenever the customer messages or calls you. After this 24-hour window expires, the message will not be delivered. Use approved template messages for communication beyond the 24-hour window.
If contact exists by phone number → Message sent to existing contact
If contact doesn't exist AND contact object provided → New contact created with provided data, then message sent
If contact doesn't exist AND no contact object → New contact created with phone number as name, then message sent
If contact object is provided, the specified data will be used
If no contact object is provided, a basic contact will be created automatically using the phone number as the firstname
firstname defaults to phone number if not provided in contact data
lastname defaults to empty string if not provided
Contact will be created as type "lead" with WhatsApp Auto Lead settings applied
If WhatsApp Auto Lead is enabled, default status, source, and assignee will be applied automatically