Environment
Mozilla Thunderbird, .MBOX file types
Issue
The current version of Mozilla Thunderbird is not compatible with the "ImportExportTool NG" add-on (i.e., the tool for importing .MBOX files into Thunderbird)
Resolution
We recently discovered that the most current versions of Mozilla Thunderbird are not compatible with the "ImportExportTool NG" add-on, which is required for importing Google Takeout .MBOX files.
The workaround is to download an older version of Thunderbird, which works correctly with the add-on. Once the older version of Thunderbird is installed, the remaining instructions in our documentation still apply. Version 102.9.1 can be downloaded from the links below:
Windows (64-bit)
https://archive.mozilla.org/pub/thunderbird/releases/102.9.1/win64/en-US/Thunderbird%20Setup%20102.9.1.exe
Mac
https://archive.mozilla.org/pub/thunderbird/releases/102.9.1/mac/en-US/Thunderbird%20102.9.1.dmg
Additional Information
Import .MBOX Files into Mozilla Thunderbird
Need additional information or assistance? Contact the ITS Service Center.