You must want to know is there any way to avoid downloading of duplicate emails and also how to remove duplicate emails from your mailbox. Then it is pretty obvious that presence of same emails will hamper your Outlook working.
Let’s consider a scenario, where you are working with Outlook 2003 with POP3 server and receiving duplicate emails. So it is necessary to identify the cause of occurrence of duplicate emails and appropriate method to remove them. pst file can cause several performance issues in Outlook and also can lead to the corruption of. Also, it creates the problem in your Outlook application and takes the valuable space. Receiving same emails multiple times unnecessarily increases the size of Outlook data file. In case you are working with a POP3 account then there are possibilities that you could get duplicate emails. Receiving redundant emails in Outlook is one the prime concern for Outlook users due to its size implications.
