Just for an addition, other good thing is that we do not need to have zero balance in order to claim this reload. If you are VIP players, this reload can be reactivated once it is expired by sending a request to VIP manager but of course the amount of the reload will always depending on our previous 7 days activities at Stake. The more we wager, the higher amount of the reload.
The 10 minutes reloads (received through email) were only given to Gold users and below while higher ranks got a monthly coupon (just like the weekly ones). These coupons/reloads are based on the amount you wagered in the past 30 days. The reloads you're referring to are different, and are only available for Platinium users (and above).
I got exactly the same email lke the one posted by virasog while I'm Platinum user. It seems that this month I do not eligible for the monthly copun, perhaps because I was inactive for the last 30 days.