How to remove a mailbox permanently

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By default when a mailbox is either disabled or removed it will show up as disconnected and it will stay there for the time defined in the Mailbox Database properties. However, using Exchange Management Shell the administrator is able to remove permanently a mailbox and that is the topic of this Tutorial.


However in some cases we want to remove the mailbox for good and remove the option to reconnect it to another mailbox afterwards.

The first step is to find out the Database name of our test user (user171) using the following cmdlet.

Get-Mailbox user171 | select name,ServerName,Database


Before testing the process of the removal of this Tutorial, let’s check the status of all mailboxes of that Mailbox Database.

Get-MailboxStastistics –Database DB05


Removing permanently…

In order to remove a mailbox permanently we must use Exchange Management Shell, using the –Permanent $True switch and the example and the process to remove it is shown in the message below.

Remove-Mailbox user171 –Permanent $True


Just in case I went to the Exchange Admin Center and removed the user172 using the traditional method. If we run the following cmdlet the results will show that the user172 shows as disconnected and user171 is not there which means that our permanently removal was successful.



In this Tutorial we went over the process to remove a mailbox permanently using Exchange Management Shell. This Tutorial was created in an Exchange Server 2013 SP1 environment.

Written by Anderson Patricio

Anderson Patricio is a Canadian Exchange Server MVP and MCSM (Solutions Master) and he contributes to the Microsoft Community with articles, tutorials, blog posts, forums and book reviews. He is a regular contributor at, and (Portuguese).