Give a full domain access to your private hub

What I want is to have the possibilty to give a domain access to my hub. Instead of importing all email adresses. For example if i have a client like Microsoft or Phillips and they want all to have access it is almost impossible to import all email adresses in to searchie. I would like to set the domain as registerd so anyone who tries to login with @microsoft.com or @phillips.com or x.com has access to the hub and get the possibilitie to setup an account. Another thing would be to be able to setup SSO within the active directory of the company with Searchie hub which will be a bit more complicated. I hope this is a quick one to fix for you guys. thanks in advance.