Email form redirect even when not "if form.posted_successfully"

[sara0310]

Hi - I'm creating a landing page for my new product. On the landing page I have an email form (email sign up section). I have it setup so when "if form.posted_successfully" the site redirects to another page on my site. This setup works great, but I want it to redirect to that page even if the customer puts in their email address again. I'm assuming it's because the form doesn't post successfully since the email address is already in the system as a customer.

Thanks!