With the increasing number of unwanted or unsolicited emails being received by most people within the department there is a feature built into Mulberry that allows possible spam / junk email to be redirected to a certain folder.
All you have to do is create a folder called "possiblespam" and most emails detected at spam / junk will be placed into the folder for checking before removing completely. There is a chance that some emails that are NOT unwanted or unsolicited may be placed into this folder, that is why you should always check before deleting them permanently.