80/20 solution: People want to use the gmail interface, so the ideal solution is to use a custom domain and point it there. You can still lose all that email b

80/20 solution: People want to use the gmail interface, so the ideal solution is to use a custom domain and point it there. You can still lose all that email but you don't lose the ADDRESS, so all the accounts that you use to login can be redirected to another email platform.