Outlook Security Manager 

One-line programming tool to control Outlook security and disable Outlook security warnings and alerts. It supports the .NET, VCL and ActiveX platforms (Visual Basic .NET, C#, C++ MFCL/ATL/.NET, Visual Basic 6, Delphi, VBA).
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Contacts Verifier 

Contacts Verifier is the Microsoft Outlook add-in designed to monitor the validity of email addresses. It is able to check your contacts throughout in a few minutes and notify you of contacts that contain invalid email addresses.
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