Hi Martin
One more update on Sunday 9/9/7 at 23:31 and none for yesterday
If that's correct, I don't seem to have had any problems. If you plan to advertise this, and save you email hassle, it might be worth pointing out that a) user should register from the email service they plan to register to avoid duplication and b) set polling for updates to a time/frequency to suit them personally e.g. weekly, daily, etc.
Certainly, has been no hassle to get the messages, even at two per day - mind you, I am receiving 40-80 non-spam messages a day anyway!
Haven't tried de-registering, so can't comment on that
Best wishes
Bob