Remove-StoreMailbox (ExchangePowerShell)

When mailboxes are moved between databases, Exchange doesn't fully delete the mailbox from the source database immediately upon completion of the move. Instead, the mailbox in the source mailbox database is switched to a soft-deleted state, which allows mailbox data to be accessed during a mailbox restore operation by using the new MailboxRestoreRequest cmdlet set. The soft-deleted mailboxes are retained in the source database until the deleted mailbox retention period expires. To view soft-deleted mailboxes, run the Get-MailboxStatistics cmdlet against a database using the property DisconnectReason with a value of SoftDeleted. A mailbox is marked as Disabled immediately after the Disable-Mailbox or Remove-Mailbox command completes. Exchange retains disabled mailboxes in the mailbox database based on the deleted mailbox retention settings configured for that mailbox database. After the specified period of time, the mailbox is permanently deleted. To view disabled mailboxes, run the Get-MailboxStatistics cmdlet against a database using the property DisconnectReason with a value of Disabled. You need to be assigned permissions before you can run this cmdlet. Although this article lists all parameters for the cmdlet, you might not have access to some parameters if they aren't included in the permissions assigned to you. To find the permissions required to run any cmdlet or parameter in your organization, see Find the permissions required to run any Exchange cmdlet.