WhatsApp 24-Hour Window

The 24-hour customer service window is one of the most important concepts in WhatsApp Business messaging. When a customer sends a message (or clicks a call-to-action that opens a chat), a 24-hour window opens during which the business can send any type of message — text, images, videos, documents, interactive buttons, and product catalogs — without needing template approval. Once the window closes, the business can only reach the customer through pre-approved message templates (which incur per-message charges).

This window resets each time the customer sends a new message. AI agents are ideal for maximizing the 24-hour window because they respond instantly (no queue time eating into the window), can handle the entire conversation within the window timeframe, and can strategically send follow-up information before the window expires. Understanding window management is essential for cost-effective WhatsApp support operations.