The one-click unread-mail filter located at the top of the screen provides the option to view unread or all emails.
The message preview pane is located under the View tab. When selected, 1-3 lines of the message body appears inside the inbox.
The zoom slider is located in the bottom blue bar on the right-hand side after a message is opened. Adjust the zoom slider to make the message larger or smaller.
The attachment reminder will prompt users to attach a file before an email message is sent without an attachment. The body of the email must include a variation of the the word attach. Users can turn off the Attachment Reminder in Outlook 2013 by selecting "Don’t show this message again" in the Attachment Reminder dialog box.
Themes offer various backgrounds and color schemes and are located in the message pane under the Options tab.