Of course, if you try deleting files or making a new profile, it's wise to first make a temporary backup of your mail and settings. As a last resort, you can try creating a new profile, setting up your accounts in it, and then migrating your mail and address books over from the old profile.(Note: if you delete "popstate.dat" and you still have messages on the server that have already been downloaded once, they will all get downloaded again.) If "popstate.dat" gets corrupted Thunderbird can get confused about what has been downloaded. If you have a POP account try deleting the popstate.dat file from the account subfolder in the "Mail" folder in your profile folder.Launch Mozilla Thunderbird application on your machine and then go to Tools > Add-ons. (You should not need to do this on a regular basis, however.) Thunderbird Remove Duplicate Messages With A Stepwise Procedure 1. These will be rebuilt when your launch the application again. Delete the index files, named "*.msf" (such as "Inbox.msf"). Compact folders, exit Thunderbird, and go to your mail folders (in your profile folder).Compact your mail folders on a regular basis.If you have a POP account set Thunderbird to delete messages from the server: go to "Tools -> Account Settings -> Server settings", and uncheck "Leave messages on server.".There is no sure-fire method to ensure that you will never receive duplicate messages again, but below are some things you can try, with the easiest options listed first. See this thread for some other possibilities.
![remove duplicate messages thunderbird remove duplicate messages thunderbird](https://venturebeat.com/wp-content/uploads/2018/05/2018050523072900-0263cfe07655b982d6035111b38e8b72.jpg)
Outlook, Thunderbird all can de-dupe across multiple. Furthermore, when it surpasses the greatest size limit or going to cross it at that point, MBOX record gets inclined to debasement. Even tried using Virtual Folder, doesn't work. Currently can only de-dupe messages in 1 folder at a time. Go to Tools menu and select Add-ons from the drop-down list. It would be nice to be able to de-duplicate messages across multiple folders.
#Remove duplicate messages thunderbird how to#
See this article for how to replace it (while keeping the messages). How to remove duplicates emails from Thunderbird 1. The second extension is not a mirror, its a completely different implementation.
![remove duplicate messages thunderbird remove duplicate messages thunderbird](https://4.bp.blogspot.com/-z8uhANqKocU/Wtgz0ULsHsI/AAAAAAAAA-M/7sh5g2qdzkUnvZpxOxkahte-YEseCJZwQCLcBGAs/s1600/3.png)
Use either the Remove Duplicate Messages or the Remove Duplicate Messages (Alternate) extension.Once the group has been defined, delete the whole batch at once with "Delete." Then select all, either from "Edit -> Select -> All" or by pressing "Ctrl+A".
![remove duplicate messages thunderbird remove duplicate messages thunderbird](https://viralwolf.com/wp-content/uploads/2017/04/email-600x235.jpg)