App that will block apps connecting to Internet

Is there an app that I can switch on to block specific apps from connecting to the Internet?

I have Little Snitch but that won't do the job. When I need to go on Hotel wifi, I'd like to block apps like Mail, Messages, iTunes and others that I can put into a no connect list. Then once I'm back on my hotspot, I turn the blocker app off and everything is connected to the hotspot again.