I have a few sites that are not based on wordpress where I have put my autoresponder sign up forms. However, if you decide to switch autoresponder systems it can be a nightmare finding all the forms on all the sites and switching the code.
I can put pop up domination forms on any site and manage the form code from one location. However, pop up domination does not have the ability to create embeddable forms.
I have found software that does this but they only work on wordpress sites.
Anybody have any ideas?