I need news letter management system for my client's website. You can use your own script or any opensource which ever is best. Install it and customise is as per the specification.
So you need to install and replace the current mailinglist with the new one. Import the current list into this new one, and program the automatic recent newsletter to be sent to new subscribers.
I am on very tight budget. I need to delivery with in 2 days once i select the candidate.