1. How will you keep bigger engineering teams on your platform if access to the data (and therefore migration) is easy?
2. I mainly work with Python. Typically I use Django's user system with my own user model and I copy and paste the client company's "general email template" into the verification / signup / reset emails and I'm done with it. If I need it on multiple services I install a JWT plugin. It takes maybe 10 minutes at the start of a project, and the developer experience is similar from what I have heard in Rails with Devise. Does this service have anything to offer to these "mature" stacks, or are you generally targeting newer ecosystems like Node / "frontend first" projects?
Also, your landing page looks great!! :)