need help creating regex spam filter rules

Please do not post a link to cox "help" or suggest I call or email cox because they aren't helpful.

how do you create regex rules?

what is the syntax?

I've tried several times AND googled regex and came away very confused.

I have seen examples in other posts here and tried some of those, and they do not seem to work.

when I create them either they send EVERYTHING to a folder I request or NOTHING.

really the spam filter options are garbage.