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.

This API is available in the following national cloud deployments.

Global service US Government L4 US Government L5 (DOD) China operated by 21Vianet


Choose the permission or permissions marked as least privileged for this API. Use a higher privileged permission or permissions only if your app requires it. For details about delegated and application permissions, see Permission types. To learn more about these permissions, see the permissions reference.

Permission type Least privileged permissions Higher privileged permissions
Delegated (work or school account) ChannelMessage.Send Chat.ReadWrite, ChatMessage.Send, Group.ReadWrite.All
Delegated (personal Microsoft account) Not supported. Not supported.
Application Teamwork.Migrate.All Not available.

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 example shows a request.

Content-type: application/json

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


The following example shows 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": [],
    "messageHistory": []