myApp.controllers
//===============================================
//=   forget password page controller
//===============================================
.controller('ForgetPasswordCtrl',['$scope','$stateParams','$http','$ionicPopup','AppData','$state','$rootScope',
  function($scope, $stateParams,$http,$ionicPopup,AppData,$state,$rootScope) {
    if( window.localStorage.getItem('loggedIn') === "true"){
      $state.go('home');
    }
    $scope.forgotPassword = {};
 //----registeration function executes on register button click-----
  $scope.submit = function(forgotPassword){
    var emailReg = /^([w-]+(?:.[w-]+)*)@((?:[w-]+.)*w[w-]{0,66}).([a-z]{2,6}(?:.[a-z]{2})?)$/i;
     if(!forgotPassword.email){
        $ionicPopup.alert({content: 'Ungültige E-Mail!'});
      }else if(!emailReg.test(forgotPassword.email)){
        $ionicPopup.alert({content: 'Ungültige E-Mail!'});
      }else{
      $rootScope.showLoader = true;
      $http.post(AppData.get("siteUrl") + "forgot-password.php", forgotPassword).then(function (res){
              $rootScope.showLoader = false;
              $scope.response = res.data;
              if($scope.response.result == 0){
                $ionicPopup.alert({
                  content: 'Fehler'
                });
              }else if($scope.response.result == 1){
                $ionicPopup.alert({
                  content: 'Wir haben Ihnen eine E-Mail gesandt.'
                });
              }
          });
    }
  }
}]);

<?php

require 'mailer/PHPMailerAutoload.php';

if (isset($_SERVER['HTTP_ORIGIN'])) {
    header("Access-Control-Allow-Origin: {$_SERVER['HTTP_ORIGIN']}");
    header('Access-Control-Allow-Credentials: true');
    header('Access-Control-Max-Age: 86400');    // cache for 1 day
}

// Access-Control headers are received during OPTIONS requests
if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {

    if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD']))
        header("Access-Control-Allow-Methods: GET, POST, OPTIONS");

    if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']))
        header("Access-Control-Allow-Headers:        {$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']}");

    exit(0);
}
$postdata = file_get_contents("php://input");
if (isset($postdata)) {
    $request = json_decode($postdata);
    forgot($request);
}


function forgot($request){

    $email = $request->email;
    $mail = new PHPMailer;
   // $mail->SMTPDebug = 3;                               // Enable verbose debug output

    $mail->isSMTP();                                      // Set mailer to use SMTP
    $mail->Host = '*****';  // Specify main and backup SMTP servers
    $mail->SMTPAuth = true;                               // Enable SMTP authentication
    $mail->Username = 'noreply@*****';                 // SMTP username
    $mail->Password = '*****';                           // SMTP password
    $mail->SMTPSecure = 'ssl';                            // Enable TLS encryption, `ssl` also accepted
    $mail->Port = 465;                                    // TCP port to connect to

    $mail->setFrom('noreply@v*****', 'myApp');
    $mail->addAddress($email, 'Joe User');

    $mail->isHTML(true);                                  // Set email format to HTML

    $mail->Subject = 'this is the test mail';
    $mail->Body    = 'This is the HTML message body <b>in bold!</b>';
    $mail->AltBody = 'This is the body in plain text for non-HTML mail clients';
    if($mail->send()){
        echo '{"result":1}';
    }else{
        echo '{"result":2}';
    }
}