Notification expired invites

Hi,

Could there be some notification/mail when an invite expired?
I know you can easily see this in Password Hub itself when an invitation has expired, but the thing is that we won't check Password Hub daily or weekly to see if a user did accept his or her invitation in time.
So, if the administrators could receive a mail when an invitation is expired that would really help us a lot for our follow-up

Kind Regards

Iris