A false positive from your perspective doesn't mean your email address isn't actually being used to sign up for things. My primary personal email address is ro

A false positive from your perspective doesn't mean your email address isn't actually being used to sign up for things. My primary personal email address is routinely used by a small handful of other real people (all strangers) for all sorts of things - college applications, car insurance, some address books think it belongs to a cousin who gets included in a lot of group threads about reunions and full of photos. I've found the families more difficult to unsubscribe from than the services, name+email associations spread like a virus. I routinely get alarming/misleading "Someone has your password!" security alerts from Google after someone tries to list my email as a backup account. These little strings we use to identify ourselves can be typed by anyone, anywhere, bot or human. I wouldn't worry too much about false positives.