## config/mail.yml [plain]
method: smtp
address: smtp.domain.com
username: user
password: pass

## app/mails/example.rb
# module SampleApp::Mails #=> Only if NOT using boot.rb
class Notifier < Base
  def signup_notification(recipient)
    recipients recipient.email_address_with_name
    from       "system@example.com"
    subject    "New account information"
    body       :account => recipient
  end
end
# end #=> Only if NOT using boot.rb