Documentation of the settings mention USERENA_ACTIVATION_NOTIFY and USERENA_ACTIVATION_NOTIFY_DAYS
But nowhere does it say how this should work. Peeking in the source, these are never used.
Search of the git history reveals this functionality did exist a while back (userena/management/commands/notifyexpired.py and even before that userina/management/commands/almostexpired.py).
Seems it dissapeared in commit e89b4dc
So remove from documentation? Or bring back this functionality?
Yes, this is functionality that still needs to be implemented. I must admit that I have forgotten it completely. Put it back on the TODO list.
For the time being, it would be reasonable to change the documentation accordingly.