Hello, I am trying to search for all of my mail that does not have a label. I label all of my mail then archive it but I think throughout the years I have forgotten some. Is there anyway I can search for all mail that does not have a label? Idea I had: Go to my All Mail and apply an arbitrary label to all of them, then go to each of my labels and remove my arbitrary one. However, is there a quick way to add a label to ALL mail for this idea to work? Also, I think this will apply it to even my sent mail instead of just mail that was sent to me? Any ideas/suggestions would be great. Thanks!