[azinman2]

You absolutely could as an initial step in a poor man's solution. However, I wouldn't call this a great UX. It means that all the ones I want to keep will continue to appear every time I need to cleanup. That doesn't group by sender, nor does it sorting out YouTube-like forwards from my dad's friends from the actual content my dad has sent.

I could go on and on for what I'd consider a great cleanup experience. It's surprising to me that such a thing doesn't exist, nor is it the kind of thing that's built into Gmail itself. You'd figure they would be best to offer a simple cleanup experience that has sane defaults.