Sending emails on uncaughtException

uncaughtException.js

if (config.admin.email) {
  process.on('uncaughtException', function(err) {
    console.log(err.stack);
    nodemailer.createTransport("SMTP", {
        service: "Sendgrid"
      , auth: {
          user: config.smtp.username
        , pass: config.smtp.password
      }
    }).sendMail({
        from: config.smtp.noReply
      , to: config.admin.email
      , subject: 'Node.js - uncaughtException'
      , text: err.stack
    }, function(err,response) {
      process.exit(1);
    });
  });
}