ajaxSubmit.php

<?php

$name = $_POST['name'];
$email = $_POST['email'];
$message = $_POST['messageField'];

$header = 'From: ' . $email . " \r\n";
$header .= "X-Mailer: PHP/" . phpversion() . " \r\n";
$header .=  "Mime-Version: 1.0  \r\n";
$header .= "Content-Type: text/plain";


$comment .= "This message was sent by: " . $name . " \r\n";
$comment .= "His email is: " . $email . " \r\n";
$comment .= "The message is: ". $message ." \r\n";


$for = 'blackmaxxgdl18@hotmail.com';
$subject = 'You have a new email from your website!';

mail($for, $subject, utf8_decode($comment), $header);

// server response!
$nombre = $_POST['nombre'];

echo json_encode(array(
	'message' => sprintf('Your email has been received %s', $name),
));

index.html

        <section id="support" class="azulBG">
                <h1 class="text-center">Support</h1>
                <div class="separator"></div>

                <p class="text-center">Contact us filling the next form</p>

                <div class="container">
                        <div class="row">
                            <div class="col-md-8 col-md-offset-2">
                                        <form id="supportForm" class="form-horizontal" method="post" class="form-horizontal" action="ajaxSubmit.php">
                                          <div class="form-group">
                                              <div class="col-sm-12">
                                                          <input type="text" class="form-control field" placeholder="Your Name" name="name" required>
                                                </div>
                                          </div>

                                          <div class="form-group">
                                              <div class="col-sm-12">
                                                      <input type="email" class="form-control field" placeholder="Your Email" name="email" required>
                                                </div>
                                          </div>

                                          <div class="form-group">
                                              <div class="col-sm-12">
                                                      <textarea class="form-control field" placeholder="Your Message" name="messageField" required></textarea>
                                                </div>
                                          </div>

                                          <div class="form-group">
                                              <div class="col-sm-12">
                                                          <button type="submit" class="btn btn-default">Send</button>
                                              </div>
                                          </div>

                                          <div id="ok">
                                                    Your message has been sent successfully. Thanks!
                                          </div>
                                      </form>
                                  </div> <!--./col-md-8 -->
                      </div> <!--./row -->
          </div>
      </section> <!-- #/support -->

main.js

			$('#supportForm').bootstrapValidator({
				message: "That´s no valid!",
				feedbackIcons: {
					valid: 'glyphicon glyphicon-ok',
					invalid: 'glyphicon glyphicon-remove',
					validating: 'glyphicon glyphicon-refresh'
				},
				fields: {
					name: {
						validators: {
							notEmpty: {
								message: "This field is mandatory and cannot be empty"
							},
						}
					},
					email: {
						validators: {
							notEmpty: {
								message: "This field is mandatory and cannot be empty"
							},
							emailAddress: {
								message: "That doesn´t look like an e-mail address"
							}
						}
					},
					messageField: {
						validators: {
							notEmpty: {
								message: "The Message Cannot be empty!"
							}
						}
					}
				}
			}).on('success.form.bv', function(e) {
				e.preventDefault();

				var $form = $(e.target);

				var bv = $form.data('bootstrapValidator');

				$.post($form.attr('action'), $form.serialize(), function(result) {
					$('#ok').fadeIn();
					console.log(result);
				}, 'json' );

			});

Thanks Mr Juan from UDEMY