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WhatsApp newsletters are channel-style conversations. Newsletter JIDs commonly end with @newsletter.

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Endpoints

EndpointBodyUse
POST /newsletter/createName, DescriptionCreate a newsletter/channel.
GET /newsletter/listnoneList newsletters known to the account.
POST /newsletter/infoJIDFetch newsletter metadata by newsletter JID.
POST /newsletter/linkCode or link fieldsResolve newsletter invite details.
POST /newsletter/subscribenewsletter identifier fieldsSubscribe to a newsletter.
POST /newsletter/messagesJID, Count, BeforeIDFetch newsletter messages.

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Read messages

{
  "JID": "120363151889@newsletter",
  "Count": 20,
  "BeforeID": ""
}
Use BeforeID for pagination when the handler and WhatsApp response provide message IDs.

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Notes

Newsletter behavior depends on the connected account and WhatsApp rollout. If an account cannot see newsletters in the mobile app, API calls may fail or return empty data.