Outlook Duplicate Remover is a free tool that automatically finds and flags duplicate contacts in Outlook. It saves time by eliminating the need for manual comparison of similar contacts.

The tool makes quick work of searching for duplicate contacts, which can be assigned categories or flagged for easy identification. It's a great alternative to manual comparisons and virtually eliminates unnecessary errors.
One of the key benefits of this software is that it can search for duplicates across one or more Outlook folders simultaneously. This includes search folders, Exchange Server public folders, and PST data files. Another useful feature is the ability to specify fields for comparing duplicates. You can choose which fields to compare, such as name, email address, phone number, fax, address, and more. A contact with insufficient data will also be recognized as a duplicate.
The software even allows you to prioritize folders during the search process. This means that contacts in folders with a lower priority will be deemed duplicates. It's also possible to create multiple configurations for different contact folders or comparison fields, making it even more convenient to use.
In addition, the software includes a separate application to find duplicates without having to start Outlook. You can also search for duplicates from the command line. These options make it even easier to customize your settings and streamline your workflow.
If you frequently synchronize your contacts with mobile devices or import contacts from other applications or web services, you may find yourself with hundreds or even thousands of duplicate contacts. Manually removing them can be a daunting task, and it's all too easy to make mistakes and delete useful contacts.
With this software, however, you can quickly find and tag duplicate contacts, making it easier to decide which ones to delete. Whether you choose to review and delete them yourself or automatically delete duplicates, this software is a valuable tool for anyone who frequently works with Outlook contacts.
Version 4.20: New features and enhancements.