An asterisk * in the title indicates the field is mandatory.
If a field has a default value, it is shown in the Description column.
If the field type is an array, the Field Name has a .[n] suffix, where n is the array index placeholder.
Object and array field names are listed to provide context. If a field belongs to an object or an array, the full field name is shown in dot separated notation.

Title	Description	Details
ExtendedFolderFlags		Field Name: ExtendedFolderFlags Type: String MaxLength: 1024
DomainController	This parameter is available only in on-premises Exchange 2016. The DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory. You identify the domain controller by its fully qualified domain name (FQDN). For example, dc01.contoso.com.	Field Name: DomainController Type: String MaxLength: 1024
Name *	The Name parameter specifies the name of the new folder. If the value contains spaces, enclose the value in quotation marks (").	Field Name: Name Type: String MaxLength: 1024
Parent *	The Parent parameter specifies values of the mailbox identity and the parent folder under which the new folder is to be created. If the parent folder isn't specified, the cmdlet creates the folder in the root folder hierarchy of the specified mailbox. You specify values for this parameter by using the syntax: <Mailbox Identity>:<Parent> Valid values for <Mailbox Identity> are unique identifiers for the mailbox. For example: Name Display name Alias Distinguished name (DN) Canonical DN <domain name>\<account name> Email address GUID LegacyExchangeDN SamAccountName User ID or user principal name (UPN) Values for <Parent> can be both the store object ID and a path string such as "\Inbox\Personal".	Field Name: Parent Type: String MaxLength: 1024
Identity	The Identity parameter specifies the mailbox and the folder that you want to view. If you don't specify the folder, the command returns information about folders in the root hierarchy of the specified mailbox. You specify values for this parameter by using the syntax: <Mailbox Identity>:<Parent>. Valid values for <Mailbox Identity> are unique identifiers for the mailbox. For example: Name Display name Alias Distinguished name (DN) Canonical DN <domain name>\<account name> Email address GUID LegacyExchangeDN SamAccountName User ID or user principal name (UPN) Values for <Parent> can be both the store object ID and a path string such as \Inbox\Personal.	Field Name: Identity Type: String MaxLength: 1024
MailboxOwnerId		Field Name: MailboxOwnerId Type: String MaxLength: 1024
IsValid		Field Name: IsValid Type: Boolean
PSComputerName		Field Name: PSComputerName Type: String MaxLength: 1024
DefaultFolderType		Field Name: DefaultFolderType Type: String MaxLength: 1024
FolderClass		Field Name: FolderClass Type: String MaxLength: 1024
ParentFolder		Field Name: ParentFolder Type: String MaxLength: 1024
AssociatedDumpsterFolders		Field Name: AssociatedDumpsterFolders Type: String MaxLength: 1024
ObjectState		Field Name: ObjectState Type: String MaxLength: 1024
FolderStoreObjectId		Field Name: FolderStoreObjectId Type: String MaxLength: 1024
RunspaceId		Field Name: RunspaceId Type: String MaxLength: 1024
FolderPath		Field Name: FolderPath Type: String MaxLength: 1024
HasSubfolders		Field Name: HasSubfolders Type: Boolean
PSShowComputerName		Field Name: PSShowComputerName Type: Boolean
FolderSize		Field Name: FolderSize Type: Integer

Model: device/exchangeonline/MailboxFolder

Model Details: device/exchangeonline/MailboxFolder