
Duplicate emails can create confusion and cause errors.The duplicity of emails has the potentiality of harming your productivity.The following should well-explain these issues: Now, let us see what impacts these duplicate emails might have on daily work. Why Should One Remove Duplicate Items From Outlook Mailbox? Try an automated tool Kernel for Outlook Duplicates Remover to remove, copy, flag or move duplicate items from Outlook mailbox. Usage of Third-Party Antivirus: In case an anti-virus program is set on the machine in which Outlook runs, there is a good possibility that the Send/Receive process gets intercepted.Mailbox is Improperly Set: If you have incorrectly set the mailbox while creating an account, you might receive the same email message, calendar entries and contacts several times.The Account Setup is Incorrect: The configuration of the same email account multiple-times can be a cause of repeated synchronization of incoming data, which can cause duplication in the mailbox.

And this, again, leads to data duplication.
