Incoming emails being repeated in my in-box

Perhaps the popstate.dat file which keeps a record of all downloaded emails has gone awol. Try removing it and see if download improves. You would need to delete the 'popstate.dat file and then Thunderbird will create a new one. The downside is that it will download everything that is on your server again, but just once. So move all emails out of the Inbox into siutable folders for organising. When Inbox is empty, right click on Inbox and select 'Compact'. Perform the following information. make hidden folders and files visible: * http://kb.mozillazine.org/Show_hidden_files_and_folders Locate your Profile folders: * http://kb.mozillazine.org/Profile_folder_-_Thunderbird * Help > Troubleshooting Information * click on 'show folders' a new window opens showing profile folders * Close Thunderbird - this is important * click on 'Mail' folder * click on the account name * Locate and Delete the 'popstate.dat' file. * Close window - top right X * Open Thunderbird. * Click on GetMail. Download should happen and you will need to sort through the mail. This should fix the popstate file so that it has an uncorrupted record of what has been downloaded. This will redownload everything once more but that should fix the duplicate issue. After fixing the popstate file you may have loads of duplicate email messages. As the Inbox was empty to start with it should be easier to delete all the copies, Then right click on fodler and select 'compact' to remove all traces of marked as delted mail. You can use this Addon to help remove duplicates that are in teh same folder: * https://addons.mozilla.org/en-US/thunderbird/addon/remove-duplicate-messages/ Please report back on whether this fixed the issue.