1) In the upper right hand corner, there will be a gear looking button. Click.
2) On the left side of the screen, there will be many categories to choose from. The Clutter settings will be under the main heading of Mail, sub category of Automatic processing and should be the second option to choose. Click
3) There are two selected buttons on the page that is brought up.
4) Select the option, Don’t separate items identified as clutter then click save.