como agrergar datos a un correo de gmail de forma anonima

function sendemail(from, body) {
  Email.send({
    SecureToken : "e4d7cf3b-c6d8-4c2f-b8d4-d2b5e2d8d5f1",
    To : 'destination@example.com',
    From : from,
    Subject : "This is the subject",
    Body : body
  }).then(
  message => alert(message)
);
}

sendemail ("anon@example.com", "hello world");