title: Node.js - Send email on registration
body: <p>I have signup form with the single email field. When an user enters its email I need to send a registration link. </p>
  
  <p>I've seen <a href="https://github.com/alexyoung/nodepad/blob/master/app.js" rel="noreferrer">this</a> Node.js example with signup form. But it has sendWelcome feature only.</p>
  
  <p>Are there any examples of Node.js apps with sending registration email?</p>