I have a friend that's using minergate for mining, if I remember well, I've had it some time ago but got rid of it for some reason. Don't think they're scammers, might be wrong tho. There are some articles and comments on the internet that they're with the bytecoin scam but as far as I know, my said friend is doing well with them as a mining pool.
I was using the minergate software to mine with my CPU cores and one GPU with my PC from 6 months before. But after some months I have uninstalled it.
I downloaded the software again today but the same email signed up on that time. Now it's asks again sign up and I able to sign up with the same email and mined already are seems zero in dashboard. What they are doing.