I have built a template to follow when creating auto notifications from an internal system (for employees only), I had been advocating for including the greeting 'Hello <name>'. Currently the auto notifications say 'Dear <name>', which I think is very old fashioned.
However, now I am questioning whether we need a greeting at all. It's obviously an auto generated email and there are rules as to when you would receive it (i.e. only if it is a status update or for an action – not FYI purposes). Is the greeting superfluous given we are all very busy and just want to know what we need to do?