Inbox Chat Message Events

Chatroom inbound and outbound messages are only for listening to message events in the chatroom.

Inbox chat message event

There are the following two push events; subscribe if needed:

chat_mt_message_notify (chatroom downstream message reception)

chat_mo_message_notify (chatroom upstream message reception)

Parameter description

Field	Data type	Required	Description
wabaId	String	Yes	Waba Id
from	String	Yes	Enterprise Sender
to	String	Yes	User WhatsApp number
messageType	String	Yes	Message type
context	Object	Yes	Message content
wamid	String	No	Meta message ID
conversationId	String	No	Session ID (InnoPaaS chatroom session ID)
uid	String	No	User-defined ID
sendTime	String	Yes	Send time, UTC, e.g.: 2026-07-09T09:11:23.405Z
sendTimestamp	String	Yes	Send timestamp, accurate to the millisecond, e.g.: 1783588283405

chat_mt_message_notify

Downlink message example

{
    "id": "b5e984b3-21b2-42a9-b08b-72e5a4096ac6",
    "type": "chat_mt_message_notify",
    "eventTime": "2023-02-22T12:00:00.000Z",
    "body": {
        "wabaId": "WHATSAPP_BUSINESS_ACCOUNT_ID",
        "from": "wamid.BgNODYxN...",
        "to": "PHONE-NUMBER",
         "messageType": "text",
         "context": {
             "text":"this is test message"
           },
        "wamid": "wamid.BgNODYxN...",
        "conversationId": "12312312312312",
        "uid":"123123123123123213123",
        "sendTime":"2026-07-09T09:11:23.405Z",
        "sendTimestamp":"1783588283405"
    }
}

chat_mo_message_notify

Upstream message example

{
    "id": "b5e984b3-21b2-42a9-b08b-72e5a4096ac6",
    "type": "chat_mo_message_notify",
    "eventTime": "2023-02-22T12:00:00.000Z",
    "body": {
        "wabaId": "WHATSAPP_BUSINESS_ACCOUNT_ID",
        "from": "wamid.BgNODYxN...",
        "to": "PHONE-NUMBER",
         "messageType": "text",
         "context": {
             "text":"this is test message"
           },
        "wamid": "wamid.BgNODYxN...",
        "conversationId": "12312312312312",
        "uid":"123123123123123213123",
        "sendTime":"2026-07-09T09:11:23.405Z",
        "sendTimestamp":"1783588283405"
    }
}