Good question! So actually this is not currently possible with the existing filter options. The tag filter only checks for inclusion, and as you discovered, looking for any card that doesn’t have an empty tag just results in finding all cards.
We will improve the filtering options in the next version to enable this, as that is definitely a valid use case!
In case you missed it, this is now available using the new tag_count filter
The Collection Creator is aware of this new filter type, so asking for “untagged cards” or “cards with more than 5 tags” should now work as expected and automatically generate the right collection.
Or for the specific use-case of untagged cards, here’s the filter group you’d need:
yes! this is perfect… i just started manually tagging my fleeting notes but now there is no need. less friction and i can review my notes easily this way thanks a lot Connor