Mail-in bonuses hit their peak when players could only participate in the arcade sweepstakes. These are always redeemable as long as you comply with the fine print that comes with playing the rewards. You can send as many requests as you wish for the Sweep Coins through postal mail. Rewards like these are perfect for players who would rather not purchase Sweeps Coins. Members of the casino get the rewards by requesting them through the mail. With this kind of promotion, players get complimentary Sweep Coins that give them chances to win big on sweepstakes. Mail-in sweepstakes are a special kind of bonus that seems to have lost its popularity among online players. Lucrative as it is, the mail-in sweepstakes may seem like a modest reward compared to the jaw-dropping rewards you get at online casinos. You have rewards like the no deposit bonus and free coins that let you wager without making a purchase.Ĭasino fans may know of different casino bonuses, but the mail-in bonus is one of those that is often forgotten about. Sweepstakes casinos have a whole lot of ingenious ways to reward players.