My filters are pretty simple.
SUBJECT contains CBD
What's to modify? They just stop. For awhile, email that has CBD in the subject is filtered to spam, then it's not. Same for Lose Weight, KETO, and everything else.
Somedays, CBD is filtered to my spam/from folder and spam/subject folder, somedays straight to the old inbox.
Same for FROM filters. I use simple, sometimes single word filters, like FROM CONTAINS "Weight." Works for a while then stops.
It would also be Extremely Helpful if the contains commands could be case insensitive. But they are not. Also would be extremely if the contains commands worked on partial words like "financ" for; financial, financing, finances. But as far as I can tell, they don't do that either.