I made an email randomizer that makes scrambled emails using the "+" feature. So any external service sees "gary+FqZWMK@gmail.com" and it automatically creates an unscrambled folder in my email that takes "FqZWMK" and converts it to the name of the service like "Netflix" or whatever.

What's nice is that I completely control the mapping of ids, so if I can make multiple random addresses go to a "one-time" inbox that automatically sends emails to spam after a while.