What are promotional codes and what do they grant? In short, they allow players get additional funds or place free bets at particular betting platform as a welcome offer or sometimes as a reward for continued loyalty. A favourite marketing tool of most are promotional offers, which in many cases require an identifiable means of releasing them to account holders and it usually takes the form of bonus codes sometimes referred to as exclusive promo codes, coupon codes, or voucher codes. The online betting industry is highly competitive, meaning that each sportsbook or casino do all they can to not only attract, but also retain a solid customer base.