Contacts Verifier is an Outlook add-in that verifies the validity of email addresses, notifying you of any invalid email addresses in your contacts in minutes.

One of the most impressive features of Contacts Verifier is that it can operate in mail merge mode with Microsoft Outlook 2002 and Microsoft Word 2002, as well as with the newer version 2003. This means that you can check email addresses from an address source used for mass mailing and exclude invalid addresses.
When verifying an address, Contacts Verifier simulates the sending of a message to the address being checked. It then receives a response from the server to which the address belongs as to whether the address exists or not. Then, it terminates the message sending and ends the session correctly. This ensures that the checking of an address is technically correct and cannot be noticed by the address owner.
Contacts Verifier also supports Socks5 protocol and NAT to work in LAN, fast multithread verifying, and has a comfortable user interface. All of these features make it an efficient and convenient tool for verifying the validity of email addresses.
In conclusion, Contacts Verifier is a valuable software product for anyone who uses Microsoft Outlook for their email. It ensures that your contact database is up-to-date and removes the hassle of manually checking each email address. Its user-friendly interface and efficient algorithms make it an excellent choice for anyone who values their time and information.
Version 2.5: Russian and German interfaces have been added