Currently - our users follow the below workflow for signing into RingCentral Glip:
1 - User signs into IDP
2 - User navigates to: https://app.ringcentral.com
3 - User selects "Sign in"
4 - User selects "Single Sign-on"
5 - User enters company email
6 - RingCentral grabs user identity from IDP & signs them into app
Ideally, I would like to skip steps 3-5 (i.e. pass the user's email as a parameter in a login request, or hit a custom tenant url which performs an automatic metadata lookup)
You already do this for other services, for example: