List Cleaner Pro for Windows. 

Optimize & clean your mail list in just a few clicks!

Remove bad email addresses from your lists such as improperly formatted addresses, toxic domains, known spam domains, government addresses, role address and domains without proper DNS mail records.

List Cleaner Pro is completely free and can save you money and your autoresponder account. Simply load your list into List Cleaner Pro and it does all the work for you!