I voted the root post down because I feel that at your level (friar) you ought to be capable of looking for existing information on this site--especially given your recent post.

Categorized Questions & Answers contains a section entitled 'mail and news'. The first two posts in this section are 'How do I send e-mail from my Perl Program?' and 'How do I send an email with Perl (including ana ttachment)?'

Then there's a simple search for 'sending mail', which returns other references to the question, such as How do I send mail? and Mail Question.