# Adding All Mailboxes to Backup Content for Exchange Online

You can add all mailboxes to Exchange Online backup content so that new mailboxes are automatically discovered and backed up when the mailboxes are created.

## Procedure

1. From the Command Center navigation pane, go to Protect > Microsoft 365.

   The Microsoft 365 Overview page appears.

2. On the Apps tab, click the app.

   The Overview page of the app appears.

3. On the Content tab, in the upper-right area of the page click Add.

   The Configure Content page appears.

4. Select Add content to backup, and then click Next.

   The Add Content tool appears.

5. Under Standard, select All mailboxes, and then click Next.

   The Content tab appears.

6. On the Content tab, click Next.

   All mailboxes that are discovered will be added to the content. When the discovery job is complete, the Microsoft 365 Protection Plan tab appears.

7. From the Microsoft 365 Protection Plan list, select the plan to use for the public folders, and then click Next.

   The Summary tab appears.

8. Click Submit.

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