a dev wasting a day on a useless project because they missed an email
This all makes sense to me, though I do think this “missed an email” issue really is a problem of unprofessionalism that needs to be resolved. I get that some people just don’t like it, but your job includes reading emails, at least from your immediate team members. Alternately, if it was missed because the sender is prone to sending manifestos to the entire team with an important query embedded in paragraph 4, they need to do better. It shouldn’t be that email is an unreliable form of communication.