This modification will allow you to accept newsletter subscriptions from people who have not yet created an account. If at such time they create an account, the information flows over into their account area.
This mod will create a new sidebox for the subscription to the newsletter. It includes an "opt-in" method where the person who is signing up for the newsletter will receive an email that has a link they will have to click in order to finalize the subscription. This provides a layer of protection for you from robots and spammers.
With this newsletter modification, you can also import newsletter subscribers from an Excel spreadsheet and it will automatically set them as confirmed.