How to Render an Angular Component to HTML in Node.Js (To Send EMails)

Let's say I have a simple Angular Component:

@Component({
  selector: 'app-email-content',
  template: '<h1>Welcome !</h1>'
})
export class WelcomeEmailComponent {
  @Input() username: string
}

My goal is to take this Angular component and render it to plain HTML with Node.Js, to send customized EMails.

I know that Server-side rendering is definitely possible with Angular Universal. But I am not sure how to explicitly render one specific component.

from How to Render an Angular Component to HTML in Node.Js (To Send EMails)