Apply a retention policy to mailboxes in Exchange Server

You can use retention policies to group one or more retention tags and apply them to mailboxes to enforce message retention settings. A mailbox can't have more than one retention policy.

Caution

Messages are expired based on settings defined in the retention tags linked to the policy. These settings include actions such moving messages to the archive or permanently deleting them. Before applying a retention policy to one or more mailboxes, we recommended that you test the policy and inspect each retention tag associated with it.

What do you need to know before you begin?

• Estimated time to complete: 5 minutes.

• You need to be assigned permissions before you can perform this procedure or procedures. To see what permissions you need, see the "Applying retention policies" entry in the Messaging policy and compliance permissions in Exchange Server topic.

Use the Exchange admin center to apply a retention policy to a single mailbox

1. Go to Recipients > Mailboxes.

2. In the list view, select the mailbox to which you want to apply the retention policy, and then click Edit .

3. In User Mailbox, click Mailbox features.

4. In the Retention policy list, select the policy you want to apply to the mailbox, and then click Save.

Use the Exchange admin center to apply a retention policy to multiple mailboxes

1. Go to Recipients > Mailboxes.

2. In the list view, use the Shift or Ctrl keys to select multiple mailboxes.

3. In the details pane, click More options.

4. Under Retention Policy, click Update.

5. In Bulk Assign Retention Policy, select the retention policy you want to apply to the mailboxes, and then click Save.

Use the Exchange Management Shell to apply a retention policy to a single mailbox

This example applies the retention policy RP-Finance to Morris's mailbox.

Set-Mailbox "Morris" -RetentionPolicy "RP-Finance"

For detailed syntax and parameter information, see Set-Mailbox.

Use the Exchange Management Shell to apply a retention policy to multiple mailboxes

This example applies the new retention policy New-Retention-Policy to all mailboxes that have the old policy Old-Retention-Policy.

$OldPolicy=(Get-RetentionPolicy "Old-Retention-Policy").distinguishedName
Get-Mailbox -Filter "RetentionPolicy -eq '$OldPolicy'" -Resultsize Unlimited | Set-Mailbox -RetentionPolicy "New-Retention-Policy"

This example applies the retention policy RetentionPolicy-Corp to all mailboxes in the Exchange organization.

Get-Mailbox -ResultSize unlimited | Set-Mailbox -RetentionPolicy "RetentionPolicy-Corp"
```PowerShell

This example applies the retention policy RetentionPolicy-Finance to all mailboxes in the Finance organizational unit.

```PowerShell
Get-Mailbox -OrganizationalUnit "Finance" -ResultSize Unlimited | Set-Mailbox -RetentionPolicy "RetentionPolicy-Finance"

For detailed syntax and parameter information, see Get-Mailbox and Set-Mailbox.

How do you know this worked?

To verify that you have applied the retention policy, run the Get-Mailbox cmdlet to retrieve the retention policy for the mailbox or mailboxes.

This example retrieves the retention policy for Morris's mailbox.

Get-Mailbox Morris | Select RetentionPolicy

This command retrieves all mailboxes that have the retention policy RP-Finance applied.

Get-Mailbox -ResultSize unlimited | Where-Object {$_.RetentionPolicy -eq "RP-Finance"} | Format-Table Name,RetentionPolicy -Auto