Hotmail addresses used to expire after a period of inactivity lol. I pranked one of my high-school buddies by re-registering his old email. At first he was just

Hotmail addresses used to expire after a period of inactivity lol. I pranked one of my high-school buddies by re-registering his old email. At first he was just very confused, then I realised he had probably used that address as a recovery email for a bunch of stuff, and was able to recover passwords for his new email address. Lucky for him I'm not the kind of person to take a joke too far.