Let's all try to give people the benefit of the doubt.

Earnie,
I would say the same back to you. Give the folks here the benefit of the doubt. I would go so far as to say that every monk here has had their fill of UCBE and is sick of it. If they err on the side of caution and don't want to help enable a SPAMMER that is understandable.

OTOH: if you were to state what volunteer organization this is for and provide a link to that more folks would be willing to help you. You won't convince everybody but will convince some.

To answer your question from a technical perspective, here's a thought:

:
:  much handwaving
:
: @lists = array of arrays with each sub array containing 
:          a reduced subset of recipients
foreach my $sublist(@lists){
   my $msg=MIME::Lite->new( To => join(",",@$sublist),
                            Subject => 'Daily blast',
                            Type => 'TEXT', # or whatever
                            Data => $body # again, whatever
               );
   msg->send;   # Modify MIME::Lite->send() accrodingly
   sleep(30); # tune this accordingly
}
[download]

Another thought is why not use a regular mailing list agent such as EZMLM or some such? Some ISPs and hosting providers provide accounts with access to such and if this is an opt-in list then there should be no reason to re-invent the wheel.

Just my $0.02 worth...