Custom made account

We sent you this previously and I want to make sure you understood our user case. I have emailed sales and support as well and would like to have a quick chat on what our options are .
We are looking to use Webpushr for web notifications for the CRM we are building at the moment. The use case on this will be that we will want the customer to place the tracking code on their websites which will handle the opt-in element and we will then use the API to send the pushes.

I am struggling to understand if it is possible to do that using a single tracking code or not which we would give to the customers from the code within the Webpushr account we will create for this. Would there be any issue with doing that at all?