As a product manager who administers Ideas for my implementation, I want to be able upload from file rather than pasting a list of domains so I may more speedily manage domain administration for my employee/partners to be able to self-register. The workaround is bearable, but it's harder to manage the more domains you need to add.
Thank you for your idea. There are currently a few ways to manage self-registration access for portal users in private portals. First, as you mentioned, is pasting a list of allowed email domains. More scalable options also include single sign-on with JWT or SAML.
Given the current options available we are unlikely to implement this idea at this time. We hope you can understand.