I just found this module: Mail::Bulkmail::Dynamic

Anyone have any experience with it? I read over the information on it at cpan, and it looks like what we can use, since one of our companies has nearly 40,000 members that we email monthly, and another has about 1/4 of that and is going to be larger that by the middle of next year. So we can really use something as efficient as this.

If you know of one, is there an even better solution?