This GSA Email Verifier directs you to removing addresses that you might not want to send emails to such as no spam@, orders@, support@, webmaster@. It clears mailing lists from bounced and undelivered email addresses. It can verify more than one email at a time because it has multi thread connection. This can be done either by the included search tool or by predefined rules which set an email automatically to valid/invalid or remove them from the list. to which you do not want to send emails. To download :- GSA Email Verifier Discount Coupon « Coupons Sky