preventing duplicate emails in office 365

This worked for some people.įinally, another person had this happen when he had two e-mail accounts set up – using two e-mail addresses, but the same POP3 incoming and same SMTP outgoing.

You will need to then determine why two instances of Outlook were running in the first place.Īnother thing you can do is to delete/remove ALL your e-mail accounts and recreate them. Two instances of outlook.exe running can produce two messages arriving at the same time. Then check the task manager to be sure that there is only one instace of Outlook running.

Start by checking Rules to be sure that copies are not being made to the Inbox, and make sure that all your rules end in “Stop Processing” actions.

There are a few things you can check to stop duplicate email messages. How to remove duplicate holidays Prevention How to remove duplicate Outlook address book entriesĤ. How to remove duplicate Outlook Today and Personal Foldersģ. How to remove Outlook duplicates, including email, contacts, appointments, and tasksĢ. Once you are sure that no more duplicates will be created, you can use these methods to clean up the duplicates.ġ. Removal is the second step to eradicating the duplicates. How to prevent seeing duplicate names when viewing the “Select Names” window after clicking “To:” How to prevent sending duplicate email messagesģ. How to stop receiving duplicate email messagesĢ. Preventing them from occurring in the future is the first step to eradicating them.ġ. Many things cause duplicates to appear, including synchronization with phones, restoring Exchange public folders from backups, incorrect Outlook rules and many other reasons. So this page is broken up into two parts: how to prevent the duplicates from occurring in the first place and then how to clean up the mess. The best way to prevent and remove Outlook duplicates is with a divide-and-conquer strategy. To find out more see our FAQ, including how to find out which Outlook version is installed. All of the information contained pertains to Microsoft Outlook, the desktop client. This page contains answers to common problems about how to prevent and remove Outlook duplicates, where they come from, and how to avoid them.

Preventing duplicate emails in office 365