Limit the number of E-Mails sent per E-Mail Address, and NOT per Domain???

I am a end user of cPanel. My host has the 500 E-Mails per hour setup on the server, which I am fine with. My problem is that when ONE of my users E-Mail accounts violates the limit EVERY user on my Domain gets their E-Mail blocked. Seems like a bad plan. I think there should be a way to make the limit something more like ( 100 per E-Mail address / 500 per Domain ) per hour. That way if I have ONE user on my Domain doing something bad, ALL the other E-Mail accounts are not punished for his actions. I have asked by hosting provider and this was their response... Hello, Every cPanel account has a limit of 500 emails per hour in total. Unfortunately, this can't be changed. Regards, ******* Support Department Is there an option, could some other hosting provider using cPanel provide the service I need or do I need to look at a host NOT using cPanel???