anonymous bulk emailer

Im looking for a bulk emailer that will send out emails anonymously connecting through sock4/5 proxies. while sending the email through multiple(20+) formmail servers at one time. Emails will be loaded into a database and mailed out whenever the user wants. should be able to store multiple subjects and body and when sending have the option to send just one or randomly select which one to send. Should run on a credit type ie. user buys credits and the credits allow the user to send a certain amount of mails ($20 = 10000 emails). it should come with a program for me to use that will calculate the coding for each amount of credits. the program will be similar to [login to view URL] ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform windows 2000, windows xp, windows 98