instance method do_send_to

# File actionmailer/lib/action_mailer/vendor/tmail-1.2.3/tmail/net.rb, line 48
    def do_send_to( smtp )
      from = from_address or raise ArgumentError, 'no from address'
      (dests = destinations).empty? and raise ArgumentError, 'no receipient'
      yield
      send_to_0 smtp, from, dests
    end