That was mostly Bayesian probability filters, followed by SPF and more recently DKIM.. Maybe you could consider the Bayesian filter databases being trained as ML, but I feel it's a far way from our typical AI/LLM surge
less than 10 years ago I worked for an AI company that sold Naive Bayes classifiers as a service. so I would call it AI
less than 10 years ago I worked for an AI company that sold Naive Bayes classifiers as a service. so I would call it AI