Annoying mail (was Hershey Felder, Hebrew Musical Instruments, A Vital Part Of Culture)

[Alfred M. Szmidt]

   >    I understand your point. However I run several lists and
   >    prefer to manually approve serious mails instead of spamming
   >    every member by keeping the gates open. It is a bit more work
   >    but keeps frustration away from list members. Of course this
   >    is just an opinion.

   > Instead of simply rejecting them, moderate all the non-subscribed
   > messages.  The best of two worlds.

   Manual approval from nonmembers, letting through anything vaguely
   on-topic written by a human, is not onerous and wouldn't break
   expectations.

Letting one annoying message slip through for every 100 is quite
acceptable.