email.php

<?php
// Pear Mail Library
require_once "Mail.php";

$event = $_POST['event'];
$name = $_POST['name'];
$time = date('Y-m-d H:i:s');

$from = '<[email protected]>';
$to = $_POST['email'];
$subject = "$name"." event notify";
$body = "Hi, \n\n$name $event at $time\n\n------------\n\nThis mail is auto generated by mail api.";

$headers = array(
    'From' => "$from",
    'To' => "$to",
    'Subject' => "$subject"
);

$smtp = Mail::factory('smtp', array(
        'host' => 'ssl://smtp.gmail.com',
        'port' => '465',
        'auth' => true,
        'username' => '[email protected]',
        'password' => 'YOUR_EMAILS_APPLICATION_PASSWROD'
    ));
$mail = $smtp->send($to, $headers, $body);

if (PEAR::isError($mail)) {
    echo('<p>' . $mail->getMessage() . '</p>');
} else {
    #echo('Email sent!');
}
?>