3 ms·Ask HN: How does Gmail detect promotional emails?1 points by sameid 11y agoI've always wondered what the magic code was that Gmail used to detect Promotional Emails. Is it some super Regex or something far more complex?noir-york 11y agoAlmost certainly some statistical method - perhaps Bayesian.sameid 11y agoThanks for the reply, I assume that would require a large set of actionable data? I'll definetly start reading up on Bayesian Statistics.