Please don't take this as a personal attack. I'm drawing attention to a broad phenomenon. http://dilbert.com/strip/1997-10-01
I find it weird that no one attacked your premises that 1) an email client with your desired features should be available for free and 2) you should be notified about personal emails instantly while at work.
I was pleased to pay for Eudora before moving over to Linux for my home system. Likewise, I'm currently paying for a domain which includes a pop service. Yes, pop. Because I don't do personal email at work.
I find these two societal trends quite disturbing. We should expect to pay for things that we receive that are of value, and when we are at work, we should expect to be working.
I'm not ready to cede either of these points.