Bill,
 
The burden on the listowner is the managing of the NOMAIL subscribers.
Many list owners will not even know to check.  Those that learn about
nomail will mostly not manage them... so they can build up over time.
 
It is not a critical issue; but I think for a well-run list, it is a good
thing to manage.  And, the heartbeat is an email message; so that, if an
address is bad, the heartbeat will bounce and the listserv error
algorithms can detect that and auto-delete the subscription if they are
using the auto-delete feature.  Since the heartbeat would go out less
often than regular mail, perhaps once a week or once a month, the
auto-deletion algorithm might have to be modified in this case.
 
Kevin
 
(SIGNATURE) Kevin J. Sinclair,  [log in to unmask],  USA Pacific Time Zone
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