Email Distribution List Management

Hi gurus! Many years ago I used a program called Lyris List manager. We could send an email to one email address, and LyrisList would do a look-up to all who have subscribed to that list and send it on. It also tracked who opened the email, clicked through, etc.

I would like to use something like this in the automations that I run. I have exceptions set up, and I would like for that to be a "list", and I have errors trapped, I would like that to be another list, and I have job completion emails that I would like as a 3rd list. I would like for my end users to be able to unsubscribe to any of them and have my list manager manage this, rather than me having to hard code a list of email addresses in the process, and then go and update that email list each time.

Any suggestions for such a simple basic tool? I think Lyris List is overkill and it looks like they probably prefer large enterprises.