{ "$schema": "https://json-schema.org/draft/2020-12/schema", "title": "MailFolder", "type": "object", "description": "A mail folder in a user's mailbox, such as Inbox and Drafts. Mail folders can contain messages, other Outlook items, and child mail folders.", "properties": { "id": { "type": "string", "description": "The unique identifier of the mail folder. Read-only." }, "displayName": { "type": "string", "description": "The mail folder's display name." }, "parentFolderId": { "type": "string", "description": "The unique identifier for the parent mail folder." }, "childFolderCount": { "type": "integer", "description": "The number of immediate child mail folders in the current folder." }, "unreadItemCount": { "type": "integer", "description": "The number of items marked as unread in the folder." }, "totalItemCount": { "type": "integer", "description": "The number of items in the folder." }, "isHidden": { "type": "boolean", "description": "Indicates whether the mail folder is hidden. Can only be set when creating the folder." } } }