I run a store where we delivery fruit and veg locally. We are a growing business and often get people asking us if we deliver to areas we don't yet. Is there an app that could add these people to a waitlist so when I start delivering to their zipcode, I can email them? "be the first to know when we open up your area for delivery" kind of thing?
It will ask for delivery area zipcode and if the zipcode is not deliverable then it can restrict the add to cart and additionally collect email from the customer as wait listing, so as a store owner you can inform them when you open service in their area. Save lot of support debts/time for you and your customers.
Please let me know if it solves your issue or you need any help with that.