This would be extremely handy for me, as lately I have had nearly 100 users send donations to allow them access to various groups. Well, I'm strapped for time, I lose track of who everyone was to what group and users never know when they have been officially added to the group.
I don't have time to email them, so basically just like when a new moderator is added, a PM gets sent to all mods regarding this addition. So, I would assume it would be easy to do basically the same for the groups.
Say I add John Doe to group "Gold"
All I need is a PM from me sent to John Doe saying whatever I want. Such as "You have been added to the Gold group. Your privilages are now setup for this group..." etc etc.
Takes a lot of time off my hands looking at users, sending them an email, etc.
If someone could do that, I would be so happy