How to Temporarily Back Up Your Postbox Data Folder


When troubleshooting an issue, it is sometimes helpful to make a backup of your Postbox data folder, just in case.  Here's how:

  • Quit or Exit Postbox so that it is no longer running.
  • Navigate to your Postbox Data Folder, located here:

~/Library/Application Support/PostboxApp

Note: In macOS the Library folder is hidden. To access it, open the Finder, hold the Option key, then select Library from the Go menu.


Note: The AppData folder is folder is a hidden folder; to show hidden folders:

Windows Vista / 7 - Open a Windows Explorer window and choose "Organize → Folder and Search Options → Folder Options → View (tab) → Show hidden files and folders".

Windows 8: Open a Windows Explorer window and choose "View Tab → Options → Change Folder and Search Options → View Tab → Show hidden files and folders, then click the Apply button". 

  • COPY (do not move) the Postbox folder to your Desktop.  This could take some time depending upon how much mail you have.
  • Restart Postbox.
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