Can't get 'Inbox' folder via Microsoft Graph api

问题

I can't get 'Inbox' mailFolder resource via Microsoft Graph api.

I tried to use /me/mailFolders to get all of mailFolders under the root folder, but the 'Inbox' didn't show in api response.

Besides, I also tried to send api with the well-known folder names, but the server responded ErrorItemNotFound.

However, there are many sub-folders under my 'Inbox' mail folder, and I can see them via Office365 website.

Here are the detail request and response.

Request:

GET /users/5df7dac4-5c93-4bb6-8dc9-7bdf586c3e97/mailFolders/inbox

Response:

{
  "error": {
    "code": "ErrorItemNotFound",
    "message": "The specified object was not found in the store.",
    "innerError": {
      "request-id": "7a5904ba-cf58-4278-aab4-937176ef2a45",
      "date": "2019-01-21T08:23:22"
    }
  }
}

来源：https://stackoverflow.com/questions/54288794/cant-get-inbox-folder-via-microsoft-graph-api