Advanced E-mail Verifier v5 Description:

Advanced Email Verifier will check every e-mail address from a given mailing list and determine whether e-mails are valid. AEV is easy to use, but powerful and reliable utility to verify and clean up your mailing list.

List hygiene plays a role in the delivery race. It is important to maintain a clean mailing list and remove bounced/undeliverable emails because a lot of ISP mail servers have been known to block a sender's email domain for repeated sending messages to non-existing email addresses.

When some Internet users move from one service provider to another, they do not take their email addresses along with them. Users who lost their email accounts may not notify you about their loss. Internet users may choose to subscribe to your service with a phony email address so that they have access to a free download or a free offer that you may be offering online. Hence, you are left with dead email addresses.