yea, I have a custom built one that does all of those things, but it's way more expensive than that
. Call it a money waster if you want; say that it takes away from the art if you want. But quite frankly if the smoker can run on it's own and let me know when I need to do something, I say yeehaw.
You might look at http://rocksbarbque.com/
. His unit does quite a bit of stuff, and I think the web software is free, which I think will send you emails or pages.
The other comercial unit is http://www.thebbqguru.com/
(which appears to currently be down....not sure what's up there). It doesn't do emails but does a very good job of controlling temperature, and one of the options is a remote you can carry around with ou.
With that said, I agree with Dude (gosh....that hurts saying that out loud
), if all you want is notifications around the house, the Maverick does a heck of a job.