Spreadshirt has a customer newsletter with advertisements and exclusive coupons. To subscribe, submit your email address in the box at spreadshirt.com. Unsubscribe anytime at no cost by clicking the unsubscribe link in each newsletter email. The value of each submitted email address is approximately $2.59 USD over the course of twelve months. Spreadshirt arrived at this value by comparing the spending habits of customers who have subscribed to the newsletter with those who have not.