It can be an intermittent side effect, especially if you click 'Send/Receive' button too often. For example, when two or more 'move a copy to' rules are applied to certain incoming messages.Ħ.Ěntivirus software may create duplicate emails. Incorrectly configured Outlook rules for incoming emails. For example, you read some emails on your laptop and on your home computer, and then move the read messages to different folders on each device.ģ.ĝuplicate emails can appear as a result of some issues with mail servers, especially when Leave Messages on the Server settings option is enabled.Ĥ.
Multiple copies of the same email from senders who are trying to bring your attention to the same newsletter, event, news etc.Ģ.Ěn interrupted or incorrect synchronization across different devices (laptop, computer, mobile device etc.). There can be many reasons why duplicate emails appear in Outlook. How to remove duplicate emails in Outlook 20
