I use a free service called Gishpuppy, which operates kind of similarly to the fastmail aliases, except it just forwards the email to your Gmail, so you don't h

I use a free service called Gishpuppy, which operates kind of similarly to the fastmail aliases, except it just forwards the email to your Gmail, so you don't have to stop using Gmail. When you get spam, you simply cancel the alias and it becomes a blackhole instead of forwarding email to your real address.