Clutter moves your low priority messages out of your Inbox so you can easily scan for important messages. Clutter analyzes your email habits, and based on your past behavior, it determines the messages that you’re most likely to ignore. It then moves those messages to a folder called Clutter, where you can review them later.
Important Note: As of 9/25/2015 Email from any address in our domain “@clcmn.edu” will not be moved to Clutter.
Turn OFF clutter (clutter is on by default)
1. Sign into Office 365 online
2. Go to the settings button
3. Go to Mail
4. Automatic processing
6. Then select Don’t separate items identified as clutter (pic below)