POP3 :: mixedpretr ( resource connection, integer message )
Returns STRING if has been successfully recived, FALSE if not.
Get data of specify message number.
Example:
$open = POP3::Connect('mail.host.net', 'username', 'password');
// get data of 1'st message
$data = POP3::pRetr($open, 1);
echo $data ? $data : 'Error';