Short description of Contacts Verifier 2.5: Contacts Verifier is the first add-in for Microsoft Outlook 2000, 2002/XP and 2003; designed to monitor the validity of e-mail addresses in your contacts. It is able to check your address-book throughout in a few minutes notifying you of contacts that contain e-mail addresses which are no longer valid. This add-in supports Socks5 protocol and NAT to work in LAN, email address validation in Office mail merge and fast multithread verifying.