How Can I Grab A Notification Email Address From A Job?

Is there a handy-dandy way for me to be able, from a stored procedure, to capture the notification email address for a user associated with a job?

I need to send an email out from a stored procedure, and I want it to be set up to send to the same user that is set up in the job that calls the stored procedure.

the same notification stored proc will be used in multiple jobs, but the jobs are already set up with a notification email to be sent to the defined users "on completion" (error or not). I want a separate email to be sent, but I want to use xp_Sendmail because I have to perform a select who's output I want to appear in the body of the email (and unless I am missing something, I have no control over the body of the standard "job completion" email).

I would prefer to NOT have to "hard code" the user email address in the stored proc that calls xp_sendmail, OR to put it in some user table in the database, when the user I want to send it to will always be the same one defined in at the JOB level in Enterprise Manager.

Any thoughts? Thanks in advance for your instantaneous and informative answer-packed responses! ;)