Earlier quoted context omitted.
I've had gmail send the following to the spam folder: - Legitimate class action notices related to Amazon purchases. - Email coming from addresses to which I had already sent email. (!) - Email from my landlord. - Email coming from Google itself. Based on the contents of my spam folder, which I have to check fairly often because of the extreme overaggressiveness, I would be vastly better off if nothing ever got filte…
I think the SPAM folder is a separate issue (although important) The article discusses mail not being accepted by google/gmail in the first place.
Messages they think you won't want to receive are what the spam folder is for.