This is basically why I give everyone a unique email address, and /dev/null the address after I stop needing it. Offtopic, but what service do you use for this

This is basically why I give everyone a unique email address, and /dev/null the address after I stop needing it. Offtopic, but what service do you use for this email redirection setup? Or do you run your own mail server? I do exactly the same thing, currently using MyDomain.com, but looking for a better alternative.