If you want to view information that is displayed in configured sections, you can click the Contextual Information button within an e-mail. Some sections may be configured to display information only related to the e-mail. The pane that displays is the same as the Contextual Pane and offers all of the same functionality available within the Contextual Pane. See Using the Contextual Pane for more information.
If you want the Contextual Pane to always display within the e-mail message, with the Contextual Pane displayed in the e-mail message, right-click in the pane and select Keep task pane open. The Contextual Pane will always be displayed when an e-mail message is displayed. To turn off the Contextual Pane display within messages, right-click and select Keep task pane open again.