Send message in a chat

Namespace: microsoft.graph

Send a new chatMessage in the specified chat. This API can't create a new chat; you must use the list chats method to retrieve the ID of an existing chat before you can create a chat message.

Note: We don't recommend that you use this API for data migration. It doesn't have the throughput necessary for a typical migration.

Note: It is a violation of the terms of use to use Microsoft Teams as a log file. Only send messages that people will read.


One of the following permissions is required to call this API. To learn more, including how to choose permissions, see Permissions.

Permission type Permissions (from least to most privileged)
Delegated (work or school account) ChatMessage.Send, Chat.ReadWrite
Delegated (personal Microsoft account) Not supported.
Application Not supported.

HTTP request

POST /chats/{chat-id}/messages

Request headers

Name Description
Authorization Bearer {code}. Required.

Request body

In the request body, supply a JSON representation of a chatMessage object.


If successful, this method returns a 201 Created response code and a new chatMessage object in the response body.


For a more comprehensive list of examples, see Create chatMessage in a channel or a chat.


The following is an example of the request.

Content-type: application/json

  "body": {
     "content": "Hello world"


The following is an example of the response.

HTTP/1.1 201 Created
Content-type: application/json

    "@odata.context": "$metadata#chats('19%3A2da4c29f6d7041eca70b638b43d45437%40thread.v2')/messages/$entity",
    "id": "1616991463150",
    "replyToId": null,
    "etag": "1616991463150",
    "messageType": "message",
    "createdDateTime": "2021-03-29T04:17:43.15Z",
    "lastModifiedDateTime": "2021-03-29T04:17:43.15Z",
    "lastEditedDateTime": null,
    "deletedDateTime": null,
    "subject": null,
    "summary": null,
    "chatId": "19:2da4c29f6d7041eca70b638b43d45437@thread.v2",
    "importance": "normal",
    "locale": "en-us",
    "webUrl": null,
    "channelIdentity": null,
    "policyViolation": null,
    "eventDetail": null,
    "from": {
        "application": null,
        "device": null,
        "conversation": null,
        "user": {
            "id": "8ea0e38b-efb3-4757-924a-5f94061cf8c2",
            "displayName": "Robin Kline",
            "userIdentityType": "aadUser"
    "body": {
        "contentType": "text",
        "content": "Hello World"
    "attachments": [],
    "mentions": [],
    "reactions": []