This is exactly the problem: Some emails you can’t respond because they require taking actions, so they stay in the inbox to remind you. And then it’s the broke

This is exactly the problem: Some emails you can’t respond because they require taking actions, so they stay in the inbox to remind you. And then it’s the broken window principle... one cool thing I recently found is that on Trello you can have board specific addresses that create a new card when an email is sent to them. This allows me to move the TODO problem outside the inbox.