> >>>Another case might be where you have agreed to be on a list as > >>>a condition of receiving some service. > > In which case unsubscribing frees the provider from having to > render the service. It does not allow the provider to resub the > poor soul who is dealing with a flooded mailbox. > > SRE The list subscribers may be generated from another data base, so someone might unsubscribe and then be automatically subscribed again when the list is regenerated. I agree that someone attempting to unsubscribe from such a list ought to be told what they need to do to get off the list.