Duplicate E-mail Remover is powerful and flexible tool intended for the search and processing of duplicated mail messages in Microsoft Outlook folders. Add-in processes both email messages and posts in mail-type Microsoft Outlook folders. You can use Duplicate E-mail Remover to find mail message copies both in one folder and in different folders. A duplicate message found can be: marked with a flag, deleted, copied or moved to any folder you choose. So, you can easily test the add-in and preview the messages to delete. A priority system in the add-in is used when you search for duplicates across several folders. Using the priority system, you can specify, for example, that of the two identical messages stored in the folders "Important Letters" and "Temporary Folder", it is the message from the temporary folder that should be considered the duplicate and hence needs to be deleted (marked, moved). Duplicate Email Remover is fully compatible with Microsoft Exchange Server and may be used to process public folders on a server. Also, if you have permission to connect to mailboxes of other users, you can process mailboxes of other users as well as your own mailbox. Works as an add-in for Microsoft Outlook 2000, 2002/XP, 2003, 2007, 2010 and 2013 (32 and 64-bit).

Product homepage:
http://www.mapilab.com/outlook/duplicate_remover/