Ya, that's sort of what I had in mind.

So woud it best to sleep my mailing script, say something like this:

$i=0;
foreach $user (keys %users) {
  prep info;
  send mail using MIME::Lite::TT::HTML
  $i++;
  if ($i%100 == 0) {sleep 2;}
}
[download]

Or is there some other, better way to do it?

Thanks.