Create mass emailer or help with atomic mailer

I am in the process of starting a press release campaign in which I will send out press releases to over 400,000 media contacts that I have via email. I was looking for a program that could automate this process while allowing me to import csv files for the emails and names. I stumbled on this program called atomic mailer that looked good but didnt seem to work as well once I purchased it. I think I am having a problem with something called a SMTP server because when I try to send them direct, they end up in the junk mail. I am looking to either have someone help me with this atomic mailer software or build a program that can handle the following things; 1) Can support a mailing list of at least 500,000 recipients 2) Can import CSV files to be imported 3) Can insert the corresponding name for each individual email 4) Can BCC other emails 5) Does not end up in spam folder 6) can support attachments PLEASE PLACE THE WORD "CHICKEN-SOUP" IN ALL BIDS AND PM'S TO ENSURE THAT YOU HAVE READ THIS ENTIRE PROJECT