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Sourcesource.business-whatsapp-com.policy-2026

WhatsApp Business Messaging Policy (Meta, 2026)

Meta's official WhatsApp Business messaging policy page, confirming the 24-hour customer service window mechanics and a pricing-model change effective October 1, 2026: service messages and utility messages sent inside the 24-hour window move to per-message pricing (previously free within the window).

business.whatsapp.com — view original source
confidence 85%v1published 2026indexed Aug 16, 2026whatsapp, messaging-apps, meta, pricing, 24-hour-window, platform-policy, vendor-doc

WhatsApp Business Messaging Policy (Meta, 2026)

Confirms the existing 24-hour customer service window mechanics: a business may send free-form service messages for 24 hours after a user's last inbound message or call; outside the window, only pre-approved template messages are permitted.

New for 2026 — pricing model change. Starting October 1, 2026, service messages and utility messages sent in response to a user inside the 24-hour customer service window move to a per-message pricing model. This previously free messaging category (inside-window service replies, including third-party AI-generated replies delivered via the API) now carries a per-message cost. Marketing template pricing and the window mechanics themselves are unchanged.

Relevance to constraint.whatsapp-24h-messaging-window. That node documents the window mechanics and template-approval friction but does not mention this pricing change, which falls squarely within this routine's freshness mandate ("quotas, timeouts, pricing"). See drafted candidate in evolution-log/2026-08-16/web-refresh.md.