Someone

<?php

if( $GLOBALS[ 'SCRIPT' ] != 'signup.php' )
{
	die( 'You probably want to go <a href=../>here</a>.' );
}

$first_name = $_POST[ 'first_name' ];

$last_name = $_POST[ 'last_name' ];

$email = $_POST[ 'email' ];

$recipient = "$first_name $last_name <$email>";

$subject = 'Complete Signup';

$tmpHTMLComments = $GLOBALS[ 'SITE_HTML_COMMENTS' ];

$GLOBALS[ 'SITE_HTML_COMMENTS' ] = false;

if( $GLOBALS[ 'SITE_SEND_HTML_EMAILS' ] )
{

$validateUpdateLink = <<<EOF
<a href="$validateSignupLink">Validate Update</a>
EOF;
	
    $emailValidateSignup = getTemplate( 'emailValidateSignupHTML' );
}
else
{
	$emailValidateSignup = getTemplate( 'emailValidateSignup' );
}

eval( "\$emailValidateSignup = \"$emailValidateSignup\";" );

$GLOBALS[ 'SITE_HTML_COMMENTS' ] = $tmpHTMLComments;

$headers = <<<EOF
From: $GLOBALS[SITE_OWNER_NAME] <$GLOBALS[SITE_OWNER_EMAIL]>
X-Sender: <$GLOBALS[SITE_OWNER_EMAIL]>
Return-Path: <$GLOBALS[SITE_OWNER_EMAIL]>
Error-To: <$GLOBALS[SITE_OWNER_EMAIL]>
X-Mailer: $_SERVER[SERVER_NAME]

EOF;

if( $GLOBALS[ 'SITE_SEND_HTML_EMAILS' ] )
{

$headers  .= <<<EOF
MIME-Version: 1.0
Content-type: text/html; charset=iso-8859-1

EOF;

}

if( !mail( $recipient, $subject, $emailValidateSignup, $headers ) )
{
	die( 'mail failed to send' );
}

?>