How to Create a Public Folder Mailbox

Creating a Public Folder Mailbox in Microsoft 365

When migrating to Microsoft 365 public folders, it is essential to ensure that a public folder mailbox is available. Below are two methods to create a public folder mailbox:

Method 1: Using the Exchange Admin Center

1. Navigate to Public folders > Public folder mailboxes, and then click Add.
2. In the Public Folder Mailbox window, enter a name for the new public folder mailbox.
3. Click Save.

Method 2: Using PowerShell

To create a primary public folder mailbox using PowerShell, execute the following command:

New-Mailbox -PublicFolder -Name MasterHierarchy

Verifying the Creation of a Public Folder Mailbox

To confirm that the primary public folder mailbox has been successfully created, run the following PowerShell command:

Get-OrganizationConfig | Format-List RootPublicFolderMailbox