Here are some tried and tested solutions to fix Thunderbird Import Tools NG not working*:
1. Update Thunderbird and the Add-on
Make sure you’re using the latest version of Thunderbird. Then update or reinstall the ImportExportTools NG add-on from the official Thunderbird Add-ons site. Version mismatches are a common cause of issues.
2. Restart Without Troubleshoot Mode
Check that Thunderbird isn’t running in Troubleshoot (Safe) Mode — this disables all add-ons. Restart Thunderbird normally to re-enable extensions.
3. Reinstall the Add-on
If the add-on is still not working, uninstall it completely, restart Thunderbird, and install it again. This helps fix corrupted installation files.
4. Disable Conflicting Extensions
Sometimes, other extensions interfere with ImportExportTools NG. Temporarily disable other add-ons to see if that resolves the problem.
5. Check Folder Permissions
Make sure you have permission to read and write in the folders you’re trying to import from or export to. Lack of access can prevent the add-on from working properly.
6. Use an Alternative Solution
If nothing works, use a professional alternative like Advik Thunderbird Converter. It doesn’t rely on add-ons and lets you export Thunderbird emails easily and safely without compatibility issues.
By following these steps, you can usually fix the ImportExportTools NG issue and get back to managing your Thunderbird emails without hassle!