Describe the steps necessary to configure a custom retention policy in Microsoft 365 to automatically delete emails older than three years from all user mailboxes.

To configure a custom retention policy in Microsoft 365 to automatically delete emails older than three years from all user mailboxes, you need to use the Microsoft Purview compliance portal. First, access the Microsoft Purview compliance portal and navigate to 'Information Governance' > 'Retention policies'. Create a new retention policy. Provide a descriptive name for the policy (e.g., 'Email Retention - 3 Years'). Choose whether ....