I am not sure which country you are referring to when you say 30 days to take effect after changing User Notifications, but in the United States of America the law is a company has 10 days to comply with this law (see item # 6 in the link below from FTC.gov website below. So after 10 days if a company is still sending emails after a person has requested to opt out, the company is in violation of the FTC rules. https://www.ftc.gov/business-guidance/resources/can-spam-act-compliance-guide-business I too am still getting this marketing offer emails from Paypal, even after opting out (I do not want to receive them).
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