process

# File actionmailer/lib/action_mailer/base.rb, line 571
    def process(method_name, *args) #:nodoc:
      payload = {
        mailer: self.class.name,
        action: method_name
      }

      ActiveSupport::Notifications.instrument("process.action_mailer", payload) do
        lookup_context.skip_default_locale!

        super
        @_message = NullMail.new unless @_mail_was_called
      end
    end