Preorder, Back In Stock ‑ STOQ

We used this app to allow consumers to sign up to be notified when a "coming soon" product is launched. The support team is very responsive and helpful. It would be great if this app could support multiple forms. Currently we are able to do one "coming soon" form and assign it to certain products, but we would like to also have a "Sold Out, notify me when back in stock" form as well.