Hey. Heard about companies that do the op-in management, where prospects sign up by email from my site for whatever the promotion (like newsletter, updates etc), then I log in to their system and manage emails from there. Was wondering if you guys can recommend any companies that specialize in this.
Not sure if this will be edited or not for entering the name of a product, but I've used Mailing Manager before. It's a great email tool, plus it allows you to generate signup forms that you can place on your website.
This would allow you to do exactly what you've asked i.e. allow customers to signup to newsletters etc, then login to an interface to manage all aspects.