Certo che dalla richiesta iniziale
codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Invio mail</title>
<script type="text/javascript">
<!--
function InviaMail(){
document.form1.action="mailto:tuamail@tuoprovaider.it";
document.form1.submit();
return false;
}
//-->
</script>
</head>

<body>
<h1 style="text-align:center"> Form Ajax </h1>
<form name="form1" action="" id="form1" onsubmit="InviaMail();" method="post" enctype="text/plain">
  


qui ci metti i campi form.
</p>
<input name="Invia" type="submit" value="Invia Mail" /></form>
</body>
</html>