My mail server marks messages with *****VIRUS***** or *****SPAM***** in the
subject.
While it may not offer me any extra protection, it sure is nice to have them
directed out of my Inbox folder with a rule. I just redirect them to the
default Junk E-mail folder; definitely don't need an extra folder to monitor
;-)
Since the OP did not post any details, it is hard to determine its
intentions or the origins of the messages that he/she wants to filter out.
If this is a client level filter, then you're definitely right; those
integration components should be uninstalled.