Does anyone have an email assistant, simply put, an assistant who only answers email, that is their only task? If so, do you have any advice on how to train them, guidelines, pay, etc..

Our former office administrator was in today and she left for another job and then unfortunately got laid off.. I propositioned her to be my 'email assistant' and she was totally into the idea and the price she shot at me seemed very very reasonable (or even low enough to make me feel guilty if I don't give her more..)

However, since I've never had an assistant I do not know what/where/how to start.. basically I just want her to respond to anything she can and keep my email organized..

Well, I would take her at her word and if it works out give her a raise.

Is depend on your workload!!!He or she can do multi tasks as well!!

Is this a one hour a day task? I don't understand an email assistant to be your first hire. I've heard other agents hire email only assistants, but they do 400-600 deals a year. They typically have 8+ assistants.
As far as compensation. I just made my first hire, and I pay her $15/hr.

If all this person will be doing is responding to email then, depending on the market you are in, around $10/hour should be reasonable.

You can also look at Colleges and Universities and hire an intern through their internship program. Will cost you much less and will be a good try out to see if u only need an email assistant or more.