kimwilson
Member
To import large MBOX files into Thunderbird, you can utilize the ImportExportTools NG add-on. Install add-on first by going to Thunderbird's "Add-ons and Themes" section. Set up "ImportExportTools NG" by searching for it. Make a folder to hold the imported emails after restarting Thunderbird. Right-click the folder, select ImportExportTools NG > Import MBOX file, and then select the file to import the MBOX file. "Import directly one or more MBOX files" is selected. Thunderbird will analyze and display the emails. If the file is really large, ensure Windows has enough resources to avoid delays during the import process. Use the BLR MBOX Converter Tool to open MBOX files in Thunderbird with ease. This solution is accessible for users to download in any version of Windows. To discover additional features, download the tool's free trial version..