Autoresponder

We need an Autoresponder that does the following: 1) Sends up to 7 sequencial messages (IT NEEDS TO BE WEB MAIL BASED) 2) Will let us add names to the database 3) Captures ALL of the subscribers and saves them in ONE text column with comma, suitable for emailing 4) Will let us email right from the software (online web-based) 5) Will let people UNsubscribe from the database 6) Will let us create an UNLIMITED number of autoresponders Please contact us immediately. We need this in the next 7 days. We will need to have the interface to begin work immediately. You may need to setup the interface on our server. Thanks Mike