Please read the following link on how to reduce spam: //www.cheatography.com/davidpol/cheat-sheets/outlook-how-to-reduce-spam-email/. Use the cheatsheet as a guide to reduce the amount of Junk and Spam emails.
Some of the emails have become very dangerous should the user attempt to open any of the links or attachments inside the email. Several clients have been attacked by Ramsonware and have had to pay the criminals to unlock their data. Reducing the amount of spam will save time and reduce the amount of risk to users.