Need Bulk Email Server -IS YOUR SYSTEM GOOD?

I need to rent a bulk email server to send out to my list of agents. I anticipate sending 15, 000 per day 5 days a week. Rotating IP.s ETC to ensure high delivery rate *******I NEED TO KNOW THAT YOUR EMAIL SERVER REALLY WORKS------I will require that you do a "Test" first to 5000 email adresses on my list before we start. That way i know your system works. I dont expect perfection. Even getting 30% in the inbox would be acceptable to me. Please bid monthly rate for using your email server Thanks!