Tracked by Evreward since 2005, Ionos by 1&1 offers cash back rebates, with savings as high as 30% off. Ionos by 1&1 discount coupons are seasonal, appearing every three to four months, and are often more valuable than similar merchants. Even when Ionos by 1&1 doesn't have a coupon, you can always get up to 30% cash back, and other great rewards, with every purchase.