Hi,
(Have a look at the threat by bakz in newbies)
There I gave this snippetm, which assumed an email_id to be posted with a form:
$id = $_POST['id']; // Do some maliceous code trapping, if you have a script
$getid_query = "select * from contact where id=$id";
$result = mysql_query($getid_query) or die(mysql_error());
while($row = mysql_fetch_array($result))
{
$receiveremail = $row['email'];
}
You could change this quickly to:
$getid_query = "select * from contact";
$result = mysql_query($getid_query) or die(mysql_error());
while($row = mysql_fetch_array($result))
{
mail($row['email'], $subject, $message, $sender) ;
}