Using A Reading Pane

Using a Reading Pane

You can use the Reading Pane to preview messages in your Inbox and other folders. If you have the Reading Pane on, when you click on an email message, the message displays in the Reading Pane and the message is marked as read.

To adjust the size of the Reading Pane, place your pointer on the divider bar and drag the bar.

Set the Reading Pane for Marked as Read Behavior

You can also select whether messages you view in the Reading Pane are marked as read or not marked as read.

Go to the Preferences>Mail page.
In the Displaying Messages>Reading Pane section, select how messages are handled when the message is selected.
Click Save.