电子邮件发送垃圾邮件

Question

我想这样做，以便我的电子邮件脚本将转到收件箱而不是垃圾邮件箱。 我怎样才能解决这个问题？ 这是我的代码

$q_ry = array();
$q_ry = "SELECT `my_email` FROM `members`";
$adresses = array();
$adresses = mysql_query($q_ry);

while ($u = mysql_fetch_array($adresses)) 
{
    if (!mail($u['my_email'],"Reunited City Newsletter",$_POST['email'],"From: no-reply@reunited-city.com")) 
    {
        echo "Email not sent to" . $u['my_email'] . "!<br/>";
    }
}

echo "<font color = 'green'><b>Mass email sent successfully!</b></font>";

如果需要，我可以发布完整的代码.. 谢谢