If you live in the us you can opt out of a certain type of junk mail from companies you don't have a relationship with: https://www.consumer.ftc.gov/articles/0

If you live in the us you can opt out of a certain type of junk mail from companies you don't have a relationship with: https://www.consumer.ftc.gov/articles/0148-prescreened-credit-and-insurance-offers https://www.consumer.ftc.gov/articles/0148-prescreened-credi...