Create Conversation

Important: APIs under the /beta version in Microsoft Graph are in preview and are subject to change. Use of these APIs in production applications is not supported.

Create a new conversation by including a thread and a post.

Use reply thread or reply post to further post to that conversation.


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) Group.ReadWrite.All
Delegated (personal Microsoft account) Not supported.
Application Group.ReadWrite.All

HTTP request

POST /groups/{id}/conversations

Request headers

Header Value
Authorization Bearer {token}. Required.
Content-Type application/json

Request body

In the request body, supply a JSON representation of conversation object containing a conversationThread and a post.


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



Here is an example of the request.

Content-type: application/json

  "topic": "New Conversation Topic",
  "threads": [{
    "posts": [{
      "body": {
        "contentType": "html",
        "content": "this is body content"
      "newParticipants": [{
        "emailAddress": {
          "name": "Alex Darrow",
          "address": ""

Here is an example of the response. Note: The response object shown here may be truncated for brevity. All of the properties will be returned from an actual call.

HTTP/1.1 200 OK
Content-type: application/json
Content-length: 201

  "topic": "topic-value",
  "hasAttachments": true,
  "lastDeliveredDateTime": "2016-10-19T10:37:00Z",
  "uniqueSenders": [
  "preview": "preview-value",
  "id": "id-value"