Originally Posted by JA$ON

As someone who has been involved in mail for years on one level or another, here is my advice......

Don't bother, you'll waste your time and $$$......

Unless you are an experienced mailer with connections for IPs etc and you REALLY know your shit, you are FAR, FAR, FAR better off partnering with an experienced company / team and letting them manage the list for you. They will be able to make 5 - 10X+ more than you will make trying to mail yourself. If you do it this way, You'll take 50% and you wont have to do ANYTHING but collect your $$$ . Im assuming you aren't experienced, since you are here asking for help.
Ive seen SO many people do this. 1mm records is honestly not a lot in the email world. Its certainly not enough to bother setting up your own mail system, buying IPs, software etc etc. Not to mention the massive learning curve. Mailing is not easy, even for the guys who have been doing it for YEARS. Trust me, let someone who does this for a living do it for you. The 50% you make will be WAY more than you get close to netting doing it yourself.

Best of Luck!!