Salvete! In one of my custom lists, I want to add a user-account column (where you display properties of a user or group) to display a user's username, but I also need to display the user's email address from his account information. I know that if I add a second user-account column, I can choose to display the "work e-mail" field, but that necessitates entering the user's name twice - once for the user's username and once for the email.
Is there any way to use the username gotten from the first user-account column to fetch the email for me? Maybe there is some third party solution?
This post seems relevant.