Now, if, you receive a message from contact X, that also contains WORD in the subject line then you will have the same email in folder Y and in Z. Rule 2: move messages that contain WORD in the subject line to folder Z Rule 1: move messages from contact X to folder Y The fix is to uncheck that option (you can find it under Account Settings -> More Settings -> Advanced).ĭuplicate email #4 – you can define rules in Outlook that generate duplicates, for example: You can’t actually fix this, only manually delete those duplicates and hope that it won’t happen again.ĭuplicate email #3 – the “Leave a copy of the messages on the server” box has been checked on your account settings and Outlook creates duplicate emails at each Send/Receive. In order to fix this, you or your IT administrator will have to log in to the email server and delete the corrupt/damaged email that is creating all the duplicates ĭuplicate email #2 – after you have synchronized your Outlook profile with your phone/tablet, something went wrong – the result is the last batch of emails are present twice on your PC. In order to help you out, we have collected a couple of reasons why this email behavior happens as well as their respective fixes.ĭuplicate email #1 – a message on the server is corrupt, and thus generates duplicates when Outlook starts its Send/Receive process.

This scenario, unfortunately, isn’t that rare and it can pose a real nuisance since you have to search and diagnose the source of the duplicates, then find a fix for it and lastly, clean up your Inbox… well, you can leave them alone and just get on with work, but those emails will take up space and if the problem persists then in the long run they will slow down Outlook, your email server and lead to more complex issues. Only this time, when you look in your Inbox, you find it filled with duplicates upon duplicates of emails, all having the same subject, timestamp and so on…

One morning, you sit down in front of your PC, take a sip of coffee and, as usual, launch Outlook for another fun-filled day of answering emails.

Stop duplicate emails in outlook 2010