Do you receive emails from stores telling you about the deals of the day? Can you unsubscribe from these emails? If you want to see what a business has on sale, you can always go directly to the website where, chances are, they’ll offer the deals you would have seen on the emails.
You may have to repeatedly unsubscribe, particularly if you order from the company and that adds you back onto the email list. (Although, quite often, when you buy something from a business, they’ll offer you the chance to opt-out of their email list. This doesn’t affect receiving order and shipping confirmations.)