Assign a UM mailbox policy in Exchange Online
When you enable a user for Unified Messaging (UM) and voice mail, you must select the UM mailbox policy that will be associated with the user's mailbox. You can change the UM mailbox policy associated with the user's mailbox after the user has been enabled for UM.
You create UM mailbox policies to apply a common set of policies or security settings to a collection of mailboxes of UM-enabled users. You can use UM mailbox policies to apply settings such as the following:
Other general UM mailbox policy properties
A default UM mailbox policy is created every time you create a UM dial plan. You can delete the default UM mailbox policies or create additional UM mailbox policies based on the needs of your organization.
For additional management tasks related to users who are enabled for voice mail, see Voice mail-enabled user procedures.
What do you need to know before you begin?
Estimated time to complete: 2 minutes.
You need to be assigned permissions before you can perform this procedure or procedures. To see what permissions you need, see the "UM mailbox policies" entry in the Unified Messaging Permissions topic.
Before you perform these procedures, confirm that a UM dial plan has been created. For detailed steps, see Create a UM dial plan.
Before you perform these procedures, confirm that a UM mailbox policy has been created. For detailed steps, see Create a UM mailbox policy.
Before you perform these procedures, confirm that the user is enabled for Unified Messaging. For detailed steps, see Enable a user for voice mail.
For information about keyboard shortcuts that may apply to the procedures in this topic, see Keyboard shortcuts for the Exchange admin center.
Use the EAC to change the UM mailbox policy assigned to a UM-enabled user
In the EAC, navigate to Recipients > Mailboxes.
In the list view, select the mailbox for which you want to change the UM mailbox policy.
In the details pane, under Phone and Voice Features > Unified Messaging, click View details.
On the UM Mailbox page, click UM mailbox settings, and then click Edit .
On the UM Mailbox page > next to UM mailbox policy, click Browse to locate the UM mailbox policy for the user.
Use Exchange Online PowerShell to change the UM mailbox policy assigned to a UM-enabled user
This example associates a UM-enabled user named Tony Smith with a UM mailbox policy named
Set-UMMailbox -Identity email@example.com -UMMailboxPolicy MyUMMailboxPolicy