Applies to: Exchange Online, Exchange Server 2016

This cmdlet is available in on-premises Exchange Server 2016 and in the cloud-based service. Some parameters and settings may be exclusive to one environment or the other.

Use the Get-MessageCategory cmdlet to retrieve a message category from the specified mailbox.

For information about the parameter sets in the Syntax section below, see Syntax.

Get-MessageCategory [-Identity <MessageCategoryIdParameter>] [-DomainController <Fqdn>] [-Mailbox <MailboxIdParameter>]

This example retrieves message categories from the mailbox User1.

Get-MessageCategory -Mailbox "User1"

The Get-MessageCategory cmdlet is used by the web management interface in Microsoft Exchange to populate fields that display message category information.

You need to be assigned permissions before you can run this cmdlet. Although all parameters for this cmdlet are listed in this topic, you may not have access to some parameters if they're not included in the permissions assigned to you. To see what permissions you need, see the "Message categories" entry in the Exchange infrastructure and PowerShell permissions topic.


Parameter Required Type Description




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,




The Identity parameter specifies the name of the message category to be retrieved.




The Mailbox parameter specifies the identity of a mailbox user to retrieve the message category from.

To see the input types that this cmdlet accepts, see Cmdlet Input and Output Types. If the Input Type field for a cmdlet is blank, the cmdlet doesn’t accept input data.

To see the return types, which are also known as output types, that this cmdlet accepts, see Cmdlet Input and Output Types. If the Output Type field is blank, the cmdlet doesn’t return data.