On sait coder, tout simplement.

const sgMail = require('@sendgrid/mail');

sgMail.setApiKey(process.env.SENDGRID_API_KEY);

const msg = {
  to: "Intek.ctr",
  from: "u@domain.org",
  subject: "Help Me!",
  text: "Could you do this task for me?",
};

sgMail
  .send(msg)
  .then(res => {
    console.log(res); // "Yes of course!"
  }, error => {
    if (error.response) { // "Never!"
      console.error(error.response.body)
    }
  });