title: How to attach files to email using Sendgrid and Multer
body: <p>I am trying to attach files to sendgrid without storing them to the disk. I want to use stream to handle that.</p>
  
  <pre><code>    var multer  = require('multer');
      var upload = multer({ storage: multer.memoryStorage({})});
      mail = new helper.Mail(from_email, subject, to_email, content);
      console.log(req.body.File);
      attachment = new helper.Attachment(req.body.File);
      mail.addAttachment(attachment)
  </code></pre>