hola. tengo formulario de suscripción pero me genera error al enviar 
			Código [Seleccionar] 
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<link href="NL-style.css" rel="stylesheet" type="text/css">
</head>
<body>
<!-- Hello! If you like this STYLE for your mail form... -->
<!-- CUT AFTER THIS LINE, and paste it inside your BODY tags -->
<link href="NL-style.css" rel="stylesheet" type="text/css">
<form name="form1" method="post" action="NLprocess.php" class="bk">
  <fieldset>
  <p align="center" class="txt">Subscribe E-mail:<br>
    <input name="email" type="text" size="12" class="txtbox">
    <input type="submit" name="Submit" value="Go" class="button">
    <br>
    our <a href="http://www.sendblaster.com/newsletter-software-no-recurring-fees/" title="newsletter software">Newsletter 
    software</a></p>
  </fieldset>
</form>
<!-- END CUT BEFORE THIS LINE -->
</body>
</html>
Código [Seleccionar] 
<?php
// Hello! welcome to the settings page.
// Here's your two steps guide:
// FIRST: 
// Instead of newsletter@test.com put the email address of the mailing list,
// (the same that SendBlaster uses in Manage Subscriptions Section)
// ... please pay attention to the  ' ' apostrophes, they must remain around the email address.
$emailmanager = 'newsletter@test.com';
// SECOND:
// save this file, and close it. Thank you!
error_reporting(0);
$email = trim($_POST['email']);
$Ok = ereg("^([a-zA-Z0-9_\.-]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$", $email);
if ($Ok) {
	mail($emailmanager,'Subscribe','','From: '.$email);
	if(!ereg("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$",$UNameFrm))
	{
	?>
<script language = 'javascript'>
	alert('Thank you, your address was added to our Mailing List');
	history.go(-1);
	</script>
<?
	exit();
	}
} 
else {
	if(!ereg("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$",$UNameFrm))
	{
	?>
<script language = 'javascript'>
	alert('Sorry, please provide a valid Email address.');
	history.go(-1);
	</script>
<?
	exit();
	}
}
?>
Código [Seleccionar] 
.bk {
	background-color: #EEF0F7;
	border: 1px dashed #47649D;
	padding: 0;
	width: 155px;
	margin: 0px;}
.txt {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 10px;
	color: #005284;}
.txtbox {
	background-color: #FFFFFF;
	border: 1px solid #CCCCCC;
	padding: 0;
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;}
	
.button {
	background-color: #005284;
	border: 1px solid #CCCCCC;
	padding: 0;
	color: #fff;
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;}
	
fieldset { 
	border: 3px solid #fff; 
	margin: 0;
	padding: 13;}