Comment by gregoriol

I agree: it's a good way to handle angry people by taking it in a soft tone and explaining; it may have a positive impact on the person because someone cares, and if the person was just angry at the moment it may also help them learn something. I often tend to take some time to respond to such kind of angry messages though, you really need to make an effort on yourself to get back to a "kind" state of mind for it to work.