EDIT: And Sparkpool wants a phone number to create an account ? Fuck everything about that.
I don't think so dude. I did read something recently about mobile phones, but I'm sure there is a way round it.
Can't find it ATM. I did come across this though:
Grin payment policy.
Our minimum payment is 1Grin. Grin bill will be generated at 14:00 (UTC/GMT +8). If your unpaid balance is more than 0.1 Grin, coins will be paid to you on 28th of each month.
Attention: if you do NOT bind to exchange, you need to withdraw manually on 28th of each month. If you do bind to exchange, coins will be sent automatically.
Don't like that, and if it's the case I will change pool. Did have a successful withdraw today.