"Spam, spam, Luverly SPAM..."
You don't NEED "Mail Filters" or anything, just tell your GENUINE
Emailers to add a certain "Keyword" to their Subject Lines of
Emails ... In my case 'Readme' .... then set up the ONE Filter
so that all mail containing that word goes to INBOX, then a
few more filters so that ALL other Mail goes straight to
TRASH...
You may need to CHECK 'Trash' once in a while, but in my
case I generally have all the Fake Pills/Enlargement/Phishing
etc, etc.. BS resting there in Trash, and only mail I EXPECT, or
WANT, in INBOX .... 99.5% of the time