问使用sendgrid节点模块，如何发送SendGrid模板引擎电子邮件？

EN

var cardEmail = new sendgrid.Email({
  to: "theuser@somedomain.com",
  from: "bignews@yourdomain.com",
  subject: process.env.SUBJECT,
  html: '<h2>Thanks for requesting a business card!</h2>', // This fills out the <%body%> tag inside your SendGrid template
});

// Tell SendGrid which template to use, and what to substitute. You can use as many substitutions as you want.
cardEmail.setFilters({"templates": {"settings": {"enabled": 1, "template_id": "325ae5e7-69dd-4b95-b003-b0109f750cfa"}}}); // Just replace this with the ID of the template you want to use
cardEmail.addSubstitution('-greeting-', "Happy Friday!"); // You don't need to have a substitution, but if you want it, here's how you do that :)

// Everything is set up, let's send the email!
sendgrid.send(cardEmail, function(err, json){
  if (err) {
    console.log(err);
  } else {
    console.log('Email sent!');
  }
});