The Cloud API cannot message channels or groups, only direct chats

The official WhatsApp Business Cloud API cannot send messages to Channels or Groups, only one-to-one messages to opted-in recipients. There is no documented endpoint for it, and Meta has not announced one. Third-party providers and unofficial libraries can automate channels or groups through unofficial paths, but they carry a real risk of the business number being blocked for mass activity. If an agent needs broadcast-style reach, the supported route is template messages to many individual recipients, with opt-in captured first.

Context: Stack Overflow #78899979 (accepted answer): asks whether the official Cloud API can send to WhatsApp Channels and Groups, noting third-party providers claim to. The accepted answer says Meta's official API has no such feature, only direct messages, and unofficial libraries that do it risk the number being blocked.

Stack Overflow #78899979 (accepted answer): asks whether the official Cloud API can send to WhatsApp Channels and Groups, noting third-party providers claim to. The accepted answer says Meta's official API has no such feature, only direct messages, and unofficial libraries that do it risk the number being blocked. Resolved: The official WhatsApp Business Cloud API cannot send messages to Channels or Groups, only one-to-one messages to opted-in recipients. There is no documented endpoint for it, and Meta has not announced one. Third-party providers and unofficial libraries can automate channels or groups through unofficial paths, but they carry a real risk of the business number being blocked for mass activity. If an agent needs broadcast-style reach, the supported route is template messages to many individual recipients, with opt-in captured first.