Disable initial navigation

By default, RouterModule.forRoot will trigger the initial navigation: the router will read the current URL and will navigate to it. We can disable this behavior to have more control.

@NgModule({
  imports: [RouterModule.forRoot(ROUTES, {initialNavigation: false})],
})
class MailModule {
  constructor(router: Router) {
    router.navigateByUrl("/fixedUrl");
  }
}