Redeemed and validated are two separate actions and shown as below to the merchants. A customer simply viewing a coupon does not trigger redemption emails. In the case where the customer clicks on the [Use This Coupon Now] at which point they will have been warned that it is a one-time use code and they still went ahead with it at which point the QR code is revealed and the system treats it as a redemption.

Note below you see 1 under Validated. Which means the Clover scanner has validated the code at your location.