Verified75% confidenceFactTime unknown
WhatsApp Business API uses a conversation-based billing model; when a user proactively sends a message to a business, a 24-hour customer service window is opened, within which the business can send any number of messages for free.
5
Sources
75%
Confidence
Long-term
Relevance
6/2/2026
First Seen
Sources
CTWA Ad Lead Capture & Conversion: A Complete Operational Guide
bilibiliYCloud-BSP
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