Email Subscription - Premium Capacity + External Users (guests)

Thanks for confirming my suspicions GilbertQ . I've reached out to our Microsoft Partner to see what we can do to find a solution for our clients as this represents a huge loss of functionality compared to our previous BI solution.

This is still a real limitation, and it isn't a tenant setting you're missing. Native subscriptions assume the recipient is a licensed member of your tenant, so the Subscribe button never renders for guests — and subscribing them on their behalf fails too.

At the scale you're describing (250+ workspaces, thousands of external users), the pattern that actually works is to deliver reports through an embedded layer that runs on your own capacity and emails scheduled exports to anyone — honoring RLS so each recipient only ever sees their own slice — instead of relying on the built-in subscription engine.

Full disclosure: I work on one such tool (Embedsy), so I'm biased. But the approach — Power BI Embedded + a scheduling layer that emails exports scoped by RLS role — is the general fix here regardless of which vendor (or a build-your-own). Happy to explain the RLS-per-recipient part if it helps. I wrote the whole thing up here: https://embedsy.io/blogs/schedule-email-power-bi-reports-external-users