Clutter for Outlook
To help you keep your email inbox manageable, Outlook gets a new feature called
Clutter. The Clutter feature creates a new folder in Outlook; email that you deem to
be low priority, but not Junk mail, should be stored here.
You have to enable this from the Web version of Outlook first go to Outlook 365,
click on the gear menu to open your settings. Go to Options > Mail > Clutter and
turn it on by selecting “Separate items identified as clutter.” From there, your
Outlook desktop app will start sorting your email. You can manually define an email
message as Clutter and that will help Outlook learn what emails are important and
which ones can wait a bit.