Postbox Won't Show Nested Sub Folders

If you have an IMAP account with deeply nested sub folders and your sub folders do not always appear in Postbox, try changing a hidden pref.

  • Open Config Editor.
  • Paste pb.imap.experimental_list_command into the "Filter" textbox.
  • Double-click on the that row for pb.imap.experimental_list_command to change the value from false to true.
  • Restart Postbox.