var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
if(xhr.readyState === XMLHttpRequest.DONE) {
console.log("Status code is: " + xhr.status + " (" + xhr.statusText + ")")
console.log("responseText: ")
console.log(xhr.responseText.toString())
var json = JSON.parse(xhr.responseText.toString())
console.log("json.message: ")
console.log(json.message)
xhr.open("POST", "https://api.mailgun.net/v3/sandboxXXXXXXXXXXXXXXXXXXXXXXXXXXXX.mailgun.org/messages");
xhr.setRequestHeader('Authorization', "Basic " + Qt.btoa("api:key-YYYYYYYYYYYYYYYYYYYYYYYYY"));
xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
"&subject="+encodeURIComponent("Subject message") +
"&text="+encodeURIComponent("Message body text")