Turn Clutter On or Off
The Microsoft Clutter has been turned off, but if you enjoy using this option for your low priority emails listed below is how you can enable the option.
You need to turn on Clutter in Outlook on the web so that you can use it both in Outlook on the web and Outlook.
Note: You can't turn on Clutter in the light version of Outlook on the web. You can switch, however, to the full version by navigating to Options > General > Light version and clear the Use the light version of Outlook on the web check box.
In the upper-left corner of the page, choose App launcher > Mail.
On the navigation bar, go to Settings > Options > Mail > Automatic processing > Clutter.
Choose Separate items identified as Clutter > Save .
You can turn off Clutter anytime by selecting Don't separate items identified as Clutter.
The Clutter folder remains in Outlook even after you turn off the feature.