Sending email from Mailer.cfc is simply a matter of calling the send() method and passing the appropriate values.
Most of the arguments are pretty obvious. The ones that bear some explanation have to do with the contents of the email. You have two choices, use the "Contents" argument with the optional "type" argument to determine if the email is text or HTML.
Argument indicating email recipients (To,CC,BCC) can be an email address or a comma-delimited list of email addresses.