In evaluating Zoho Billing, a hurdle to adopting it is that Zoho Billing does not seem designed to support businesses that sell multiple subscriptions of the same product. In our case, we need to sell and manage several domain names per client.

Am I right in thinking that to achieve this, we would have to create a completely custom client portal and then use Zoho Billings API? As it stands, it just looks like there would be no way to do this since the custom fields can not be used in product titles or in product descriptions out of the box, at least as I understand it. So the end result would be that customers would just have to open each subscription until they found the domain they are looking for, which wouldn't work.