My account on betfury and two other casinos have been inactive for over a year now, ive never recieved any email from any of this casino calling my attention to any prepared bonus to get me to be active with my account again lol.
I haven't visited Betfury for a long time, but a few days ago I got an email to claim a bonus code given in the Champions League and Tennis events. I also got the same email from other casinos. Giving bonuses, even though they are small, whether with conditions or not, is indeed given to users who have previous activity and then stop.
I also got that champions league "bonus" which wasn't really a bonus per se. It was just an insurance bet of 5$, basically you have to bet your own money of 5$ and if you lose you get the money refunded. So if you don't have that money in your account you can't use that offer.
Stake doesn't send bonuses like this. If you get some it's straight up cash, with or without wager requirement, depends on the kind of bonus they have sent you obviously.