CmdID

CmdID / PowerShell / Cmdlets / Remove

Remove-StoreMailbox

Use the Remove-StoreMailbox cmdlet to purge the mailbox and all of its message content from the mailbox database. Exchange PowerShell reference

From the Exchange PowerShell reference 5 parameters Its page in the reference

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Parameters

5 in the Exchange PowerShell reference
-DatabaseThe Database parameter specifies the mailbox database that contains the mailbox to remove.
-IdentityThe Identity parameter specifies the identity of the mailbox that you want to remove.
-MailboxStateThe MailboxState parameter specifies the mailbox state on the source mailbox database.
-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.
-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.