Those can be several 'Move the item to folder' rules, plus others. For each incoming message, Microsoft Outlook applies all the rules together. One of the most common causes of duplicate emails in an Outlook mailbox is the rule configuration. Here is the list of the 7 situations that provoke repeated emails in Outlook and the ways to avoid the problem. The reasons that may cause email duplicating in Outlook may be different. Why Outlook duplicates emails and how to prevent the email duplicating Removes duplicate Outlook emails in bulk and by schedule with command line app.Allows setting your own criteria to specify what messages are duplicates.Removes duplicate emails in Outlook PST data files.Deletes duplicate Outlook emails from one or multiple folders at once.Enables moving duplicate messages to the specified Outlook folder, to bring them back to their original locations, if necessary.Removes duplicate emails in Outlook folders, Exchange and Office 365 mailboxes, as well as Exchange Server public folders.

Remove outlook