News Letter System and Bulk mailing

Hi All, We need a News Letter system to manger our news letters. We need to track the news letters. The news letters will be sent as mail to a huge list of users. We need to be able to track which subscriber has read our news letters, how many time and other info. We need to manage the email lists, add new news letters, upload bulk mail lists send bulk mails, schedule bulk mails. Regards, Techpartner.