You say "would need". Are you still unable to get the Shop resource and extract the email? Why is that? In simple scripting with Ruby it is just ShopifyAPI::Shop.current.email and I am sure any other scripting language has same level of support. Get the Shop resource with one API call and you get everything. Everything except the metric or imperial setting of the shop and that is a PITA :) for me at least as I need to know that for one of my Apps.