Update Outlook category

Namespace: microsoft.graph

Update the writable property, color, of the specified outlookCategory object. You cannot modify the displayName property once you have created the category.


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) MailboxSettings.ReadWrite
Delegated (personal Microsoft account) MailboxSettings.ReadWrite
Application MailboxSettings.ReadWrite

HTTP request

PATCH /me/outlook/masterCategories/{id}
PATCH /users/{id|userPrincipalName}/outlook/masterCategories/{id}

Request headers

Name Description
Authorization Bearer {token}. Required.

Request body

In the request body, supply the values for relevant fields that should be updated. Existing properties that are not included in the request body will maintain their previous values or be recalculated based on changes to other property values. For best performance you shouldn't include existing values that haven't changed.

Property Type Description
color String A pre-set color constant that characterizes a category, and that is mapped to one of 25 predefined colors.


If successful, this method returns a 200 OK response code and updated outlookCategory object in the response body.



Here is an example of the request.

PATCH https://graph.microsoft.com/v1.0/me/outlook/masterCategories/bac262b7-485d-4739-b436-e31467d64fac
Content-type: application/json


Here is an example of the response. Note: The response object shown here might be shortened for readability.

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

  "displayName":"Project expenses",