>For the best, you will probably want to use Mailx. This is what I use for distributing 150000 emails per week for all my applications. It also supports VIM, SMTP, POP, file attachment and whatever you'll need. This tool is just fantastic.
>
>How I get the Mailx? Is it free?

No, all the good tools are not free. :)

http://www.terckland.com/