Created attachment 1117 [details] information on red boxes was not sync with actual process, it should show "Filtering". Once upon a time :D I have many emails on my inbox, when I pop-ed it, it freezes my claws, I wonder why? So I put --debug, then I saw it was in the process of filtering all my mails, instead of retrieving as shown in the progress window. The information on progress window is not what they actually said. The information says it is "Retrieving", while actually it was "Filtering". And on other part of progress window, it says "Quitting". So the three process is not sync. So my suggestion is to sync all the information on progress window into the actual process. In this case, it should be showing "Filtering" instead of "Retrieving" or "Quitting". Please check red boxes on the attachment.