I'm planning to offer a free plan for my B2B SaaS platform designed for ecommerce businesses.
Part of the service is online software that integrates with their store but the other involves sending a piece of technology we invented to their customers' home addresses in the mail. Each time this is sent, our client pays us $2.
So the platform itself is free but there are usage charges. Is this model called something in particular? Is it SaaS?