5 ਤਾਰਿਆਂ ਵਿੱਚ 2 ਮਿਲੇ

Does not seem to descend into subfolders. Also, could not get a preview of what was to be deleted (or control duplicate triggers). Could not figure out what console to look at (popup window directing me to console). Thunderbird console (under developer tools) didn't seem to have any information about deletions.

Yes, that's correct that it does NOT decend into subfolders. Nor do you have control over defining what is a duplicate. I'm not that great of a developer. I think I want to change the notification system to use a webpage instead of the windows notification panel. That would potentially allow me to show the emails that would actually get deleted or were deleted.