I know about DH's Announce List system, but this questions has nothing to with that.
I will be using an outside program and it will oblige by the Anti-Spam-Policy DH sets for software like this. I have read and tested it very carefully.
What I need to know is any limits of the amount, lets say per hour of sending emails. I can set this in the software from 60 to 3000+ per hour.
My guess is it will be closer to 60 then 3000 and I doubt I will ever have a number of subscribers that high to send in 1 list (the software uses, as I will do, different lists per subject to sign up for)
I can also set a bandwidth limit, but I don't think that will be an issue, since all Newsletters, even HTML, are just text, so will always be small.
To be clear, I am on a shared server.