"Not Spam" feature [Edited]

Apparently, Xfinity has abandoned its email oversight.  These [Edited: "Inflammatory"] are now blocking my newletter from the Boulder Public Library.  Is this the new "intelligence" that biz like Xfinity are so excited about?  Got to say I'm impressed.  When they nail something as spam, you can never get it permanently back into the inbox; it pops immediately back into the spam folder.   Must be they are so intent on trying to stem the flow of revenue bleed from fleeing subscribers, they don't care about their total service performance - which must be around 0% approval rating by customers.  They block my billing emails and EVERYTHING with a Paypal address - and there is no way to fix it on the consumer end.