SMTP Mass mailer

I need a mass mailer (ezine) based on a mysql mailing list. The mailing list table fields: id, name, email, active The emails will be personalized for each registered user, will have a "mail opened" feedback, a click on link counter and unregister link. Suggested class for sending is SWIFT Mailer. Emails sent are registered in "sent_emails" table (id, title - email subject, date, time, sent_to - number of active users ). Once the receiver opens the email the followings are going to "stats" table : sent_email_id - from sent_emails, user_id - from mailing list, opened - which indicates how many times user opened email, datetime (separated by ,) as text for each time he opens email, ip - text field with ip's separated by "," for each time he opened email links from mail will be redirected to a php which adds the link also to stats table with datetime attached (field: click = 20080303123000-link) - exception will be the unregister link and the open counter link Well this is the suggested DB structure (which we use now) but any other ideas are well taken. IMPORTANT: - failed sending or receives will not be retried/resent. - the system must not overload the server - Domain Key setup help may be needed - we would like someone who made this already and has a well tested - working version