Turn Clutter on or off
You need to turn on Clutter in Outlook Web App, so that you can use it both in Outlook Web App and Outlook.
- Sign in to Outlook Web App. For help, see Sign in to Outlook Web App. Note: You can't turn Clutter on in the light version of Outlook Web App. You can switch to the full version by navigating to Options > Outlook Web App version and clear the Use the light version of Outlook Web App checkbox.
- At the top left corner of the page, select the App launcher icon, and then select Mail.
- On the top right corner of the page, go to Settings > Options > Mail > Automatic processing > Clutter.
- Choose Separate items identified as Clutter, then Save .
You can turn Clutter off anytime by selecting Don't separate items identified as Clutter.
Note: The Clutter folder remains in Outlook after you turn off the Clutter feature.
More about Clutter can be found here on the Microsoft Site.