Heavy Mailer for Affiliates

We need a programmer who can setup a mass mailer for our affiliates with the following capabilities: ability to add email addresses with or without commas removing duplicate addresses letting readers unsubscribe and subscribe unlimited number of emails sent I wasted the last week with a programmer who tried to set one up The interface was horrible and they NEVER got it to work right. And, as is always the problem here, the communication stopped! You can see at the link below (the password is "password'). [login to view URL] I do not want the above program again! Need something that works and we need it immediately! Thanks Michael