It's also possible to start a welcome conversation and to send a notification mail to your team members about the new registered user!
All settings can be found in your acp => options => New User Notification System
You can also customize the phrases on this page... Just click on "edit phrase"
Github repository: https://github.com/ragtek/NUNS
Known Bugs: https://github.com/ragtek/NUNS/issues?state=open