Yes, it's been measurably worse for somewhere on the order of months to years now. I'm not sure what they've changed internally, because if they have talked ab

Yes, it's been measurably worse for somewhere on the order of months to years now. I'm not sure what they've changed internally, because if they have talked about their engineering strategy for spam detection (which I doubt, since it's probably asymmetric information), no one has shared writings about it. Nevertheless, I get obvious spam in my inbox now, and important email occasionally goes straight to my spam filter now. People here on HN have been speculating that they moved to some sort of machine learning model, probably because employees were incentivized to pervert the existing product for promotion purposes by gaming internal metrics to prove they've had an impact.