Google didn't "solve" spam at all, they are just playing rough. The jail sentences for spam network operators, the the shift to ddos/mining/etc of botnets, and

Google didn't "solve" spam at all, they are just playing rough. The jail sentences for spam network operators, the the shift to ddos/mining/etc of botnets, and user awareness, bitten by spam helped, but not solved. You probably used a crappy provider, with no feedback loop for spam before.