Show display names instead of usernames in notification emails

Thanks Ferenc, 

This would be a great feature for us to be able to modify. We could then easily see who actioned an archive from the email result, and use this to discuss in our meetings if needed. We are unable to do so now as our usernames are actually identifiers, and not real names. 

Upvoting this. Also in many of our systems the username is just an ID not a real name.

We cannot indentify users by their username. Display name would be preferable.