How to delete duplicate emails from Thunderbird

popowich

EQ Forum Admin
Staff member
Hello,

Did your Thunderbird download a duplicate copy of your emails?

  • Maybe your email service provider had to restore your mailbox?
  • Maybe your ISP did a server migration?
  • Maybe a web site went crazy and sent you lots of emails?
This add-on does a great job of removing the duplicate emails from inbox and folders:

https://addons.mozilla.org/en-us/thunderbird/addon/remove-duplicate-messages/

After downloading the install file:

Mozilla Thunderbird Tools Addons.JPG Mozilla Thunderbird install addon from file.JPG

Go to Tools -> Addons and then use the Gear icon to select Install add-on from File.
 
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