Every time you sign up for a service or use your email in any other way, there’s a chance it will end up in a place you didn’t expect. From there, it spreads – into marketing lists, data brokers, and eventually spam campaigns. On iPhones, for example, email is tightly integrated into the system. Messages appear in the Mail app, notifications show up instantly, and everything is convenient until spam starts coming through just as often as real messages. So if you want to know how to stop spam emails on iPhone, you need to understand one thing: your phone…