How has AI and filtering changed email in the 2020s?
In the 2000s we saw Bayesian filtering which learned from words and patterns. Spammers tried to poison these filters by adding blocks of normal text at the bottom of messages.
In the 2020s mailbox providers moved to behavior based and engagement based filtering. They do not just ask Is this message spam. They ask Does this user usually read this kind of message.
It is like a harbor that remembers which ships you personally welcome and quietly redirects the rest to a side dock so your main pier stays clean.
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