Friday is the dawn of a new era in consumer privacy. It wasn’t supposed to look like the promotions tab in Gmail---full of emails that may or may not be useful, none of which you want to click on, all with fine print that makes the offer less attractive. For months, companies have been bombarding inboxes with privacy updates, nominally in order to comply with the General Data Protection Regulation, a supercharged set of privacy laws in the European Union, which go into effect Friday.

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