As for abuse, I made myself a tool to give myself quintillions of email addresses (not using plus addressing) on gmail.com I use this to sign up for a service

As for abuse, I made myself a tool to give myself quintillions of email addresses (not using plus addressing) on gmail.com I use this to sign up for a service with a unique email that is basically my junk box, but the email is its own unique entry in my password manager