> 15 year old slightly trained spam filter with a sensible config can filter all without any false positives. If it were that easy why do all the big players d

> 15 year old slightly trained spam filter with a sensible config can filter all without any false positives. If it were that easy why do all the big players do it so badly? I'd rather get more spam in my inbox than miss the false positives (in fact most of what's in my spam folder is technically legitimate, but usually just broadcast emails from organizations I happen to have used my email address for at some point in the past). But I haven't found a way to sufficiently lower the threshold for spam detection for any email service I've used to avoid that problem.