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Public folder mailboxes can be deleted through the Exchange Admin Center (EAC) or by using the Remove-Mailbox -PublicFolder cmdlet. To delete a primary mailbox, all other mailboxes must be deleted first. Once deleted, the mailbox will no longer be visible in the EAC. Deleted public folder mailboxes are recoverable for up to 90 days.
Administrators may need to recover public folder mailboxes in Microsoft 365 that have been soft-deleted. Soft-deleted means the mailbox retention period hasn't expired, and the recycle bin hasn't been emptied.
Get-Mailbox -PublicFolder -SoftDeletedMailbox
Undo-SoftDeletedMailbox -PublicFolder
The Type field in the information returned by the Get-Mailbox cmdlet identifies public folder mailboxes as either Primary or Secondary. Primary public folder mailboxes must be restored first.
Get-Mailbox -PublicFolder -SoftDeletedMailbox
Undo-SoftDeletedMailbox -PublicFolder
Undo-SoftDeletedMailbox -PublicFolder
Get-Mailbox -PublicFolder -SoftDeletedMailbox
Note: You can distinguish primary public folder mailboxes from secondary ones by checking the Type field.
Undo-SoftDeletedMailbox -PublicFolder
ManageEngine M365 Manager Plus is a Microsoft 365 reporting, auditing, management and monitoring tool. With M365 Manager Plus, you can:
Effortlessly perform public folder management in bulk.