Someone did this with my main real world Gmail address. I am still fighting it by periodically dropping from the spam lists I was recently added to.

We need a law that just like you are required to let people drop from a mailing list, there's a law requiring one ack or click on a link to join a list. I always get on legit lists that will stop once I request. But in a month I get 100+ new lists often sending me 10-50 messages a day.