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Enable Single Item Recovery for a Mailbox
Applies to: Exchange Server 2013, Exchange Online
Topic Last Modified: 2013-03-11
You can use the Shell to enable single item recovery on a mailbox. By default, single item recovery is disabled when a mailbox is created. If single item recovery is enabled, messages that are permanently deleted by the user are retained in the Recoverable Items folder of the mailbox until the deleted item retention period expires. If a message is changed by a user or a process, copies of the original item are also retained. In an on-premises Exchange organization, the mailbox uses the deleted item retention settings of the mailbox database, by default. The deleted item retention period for a mailbox database is set to 14 days, but you can override the default by configuring this setting on a per-mailbox basis.
If a mailbox is placed on In-Place Hold or litigation hold, deleted items are retained until the hold is removed.
To learn more about single item recovery, see Recoverable Items Folder. To recover messages deleted by the user before the deleted item retention period expires, see Perform Single Item Recovery.
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| In Exchange Online, the deleted item retention period is set to 14 days, by default. You can change this setting to a maximum of 30 days. |
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Estimated time to complete: 2 minutes.
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You need to be assigned permissions before you can perform this procedure or procedures. To see what permissions you need, see the "Retention and legal holds" entry in the Recipients Permissions topic.
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You can't use the Exchange admin center (EAC) to enable single item recovery. But in an on-premises Exchange organization, you can use the EAC to change the deleted item retention period. For details, see Configure Deleted Item Retention and Recoverable Items Quotas.
In Exchange Online, you have to use the Shell to change the deleted item retention period. For details, see Change the Deleted Item Retention Period for a Mailbox in Exchange Online.
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For information about keyboard shortcuts that may apply to the procedures in this topic, see Keyboard Shortcuts in the Exchange Admin Center.
Having problems? Ask for help in the Exchange forums. Visit the forums at: Exchange Server, Exchange Online, or Exchange Online Protection.
This example enables single item recovery for the mailbox of April Summers.
Set-Mailbox -Identity "April Summers" -SingleItemRecoveryEnabled $true
This example enables single item recovery for the mailbox of Pilar Pinilla and sets the number of days that deleted items are retained to 30 days.
Set-Mailbox -Identity "Pilar Pinilla" -SingleItemRecoveryEnabled $true -RetainDeletedItemsFor 30
This example enables single item recovery for all user mailboxes in the organization.
Get-Mailbox -ResultSize unlimited -Filter {(RecipientTypeDetails -eq 'UserMailbox')} | Set-Mailbox -SingleItemRecoveryEnabled $true
For detailed syntax and parameter information, see Set-Mailbox.
To verify that you’ve enabled single item recovery for a mailbox and display the value for how long deleted items will be retained (in days), run the following command.
Get-Mailbox <Name> | FL SingleItemRecoveryEnabled,RetainDeletedItemsFor
