> If the poster is also a recipient and the mail bounces
> when sent to the recipient back to the poster, then what?
> In general, what can the poster do about "bounced" mail --
> they can't unsub the problem subscriber.
> This isn't a criticism, just curious as to the scenario.
 
Scenario is that the owner wants the _sender_ to know
exactly who did not receive the mailing, but does not want to
have to notify the person themselves or deal with the bounces.