Smart Folder for One Tag Only

[King78]

How do you create a Smart Folder that would show all items that have just one tag only? Specifically, those items that just have the "unread" tag but no other tag?

[Michael Tsai]

How do you create a Smart Folder that would show all items that have just one tag only? Specifically, those items that just have the "unread" tag but no other tag?

I will add that as a feature request. Right now, I think the only way to do that would be to say “None of the following are true: Tags Contains any of <list every tag here>”.