Digital Codes Download Deployment app recommendations

[Thinkdifferent]

We have been using an app called DPL, which I have found to be great. We only need it to manage our provided codes for about 50 different products and to fire off emails with codes that are unique for each product with a download link and insert code. No files, etc. Only issue now is, we will be having orders come into Shopify Plus via EDI and they will be marked as unpaid. Our partner sending these orders to us collects the payment and then pay us later on. The DPL app will only fire off email with codes on orders marked "paid". So, looking for a new app. Want something like DPL. Very simple to use and of course able to fire off emails on unpaid orders. Any suggestions? the ones I looked at in the App Store seem more geared if you are providing files to to customers, so dont need that. Any suggestions much appreciated. Thanks!!