

Some common reasons that can lead to duplicate emails in Outlook are as follows: 1. Incorrectly Configured RulesĬreating incorrect rules in Outlook is the most common reason that can result in data duplication in the Outlook mailbox. Possible Reasons that Result in Duplicate Emails in Outlook 2016/2013/2010/2007

Once you have detected the cause, you can apply an appropriate workaround to delete multiple emails.
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Meaning, business users may end up replying and responding to the same message repeatedly.īefore proceeding with ‘ How to remove duplicate emails in Outlook?’, it is crucial to understand the actual cause of the problem. Since business users have to deal with numerous email messages and reply to each message, having the same copy of emails may result in the duplicate effort.Increase mailbox size, which may lead to data file corruption and Outlook hanging issue.

