fastmail has a service called pobox.com, which is basically like an incoming e-mail router. I do similar to the OP, using it. You can route 1 incoming e-mail

fastmail has a service called pobox.com, which is basically like an incoming e-mail router. I do similar to the OP, using it. You can route 1 incoming e-mail to 2 gmail boxes, which is very useful.