If there is nothing in the current profile that is of value. Do the following # Ensure Thunderbird is closed # in the start menu type %appdata% and press enter. # Replace the Thunderbird folder and ALL of it's sub folders with those from your backup. # Start Thunderbird and you will have your backup as a replacement profile. If you want to try and merge the two. # download the import export tools add-on from here https://addons.mozilla.org/en-US/thunderbird/addon/importexporttools/ # Install it using the instructions below # select a folder in "local Folders" # From the Tools menu select the import export tools # Select import an mbox file # In the dialog that opens select the last option and click ok # in the file picker, select the mail directory you included in your last post. # Be patient and select to continue if you get unresponsive script warnings. '''How to Install Add-on Extension:''' * Open the add-ons manager ([[Image:New Fx Menu]] then [[Image:appmenuAddons]]) * Drag your downloaded XPI file to the add-on manager tab and drop it. or * [[Image:CogWheel]] and select 'Install Add-on From File'. * Locate the *.xpi file you downloaded and click on 'Open'. * You many need to restart Thunderbird when prompted. For more detailed instructions and information about installing add-ons please see [[Installing an Add-on in Thunderbird]]