I'm sure there is a better way. This was just fast to throw together.
This assumes you have dbmail setup and a valid operator.
Run this on the server you want to monitor:
create database dbadmin
create table serverstatus (
insert into serverstatus
create a least privelidged login and a link server connection from your monitor to the monitoree with that account.
Then throw this in a job step
Declare @isawake char(1)
set @isawake = (select isawake
if @isawake <> '1'
raiserror('Test Notify Server Failure', 16, 1, 1)
Set the notifications on the job to email the operator on failure. Also have a second server that points back to the monitor server to validate that is awake as well.