Read email messages in plain text
Formatting, pictures, and links can be turned off for all messages that you open in Microsoft Outlook 2013.
Click the File tab.
Click Trust Center, and then click Trust Center Settings.
Click Email Security.
Under Read as Plain Text, select the Read all standard mail in plain text check box.
To include messages signed with a digital signature, select the Read all digitally signed mail in plain text check box.
Note If you want to view a plain text message in its original format, click the InfoBar, and choose either Display as HTML or Display as Rich Text.