For example to add the email address to the "Mailboxes - Inventory" insight.
Open the Insight Library > Mailboxes - Inventory insight.
On the top right click the customize button.
On the "Insight Library > Mailboxes - Inventory > Customize Mailboxes" property page you can move or delete the existing fields on the page.
To add a new field click "Manage field columns"
To add the users email address Expand Owner | Messaging Address and place a check in the "Messaging Address" check box.
Click Apply and click Apply again.
