Yes, on the Pro plan — it is part of the $100/mo list price, not an enterprise upsell behind a sales call.
Idlefy is an OpenID Connect relying party: authorization code flow with PKCE, with your provider's endpoints and signing keys read from its /.well-known/openid-configuration document. Okta and Auth0 are the two we test against live tenants; another provider works if it publishes OIDC discovery, signs ID tokens with RS256, RS512 or ES256, and authenticates with a client secret (client_secret_basic or client_secret_post). Setup is issuer URL, client ID, client secret, done in the app under Organization. If your provider is set to sign with something else, tell us — widening that list is a small change on our side.
Your domain is proven, not just claimed. You add an email domain and publish a DNS TXT record for it; until that record resolves, the domain grants nothing. Matching is exact — verifying acme.com says nothing about eng.acme.com. We re-check daily, and a domain whose record disappears stops being trusted.
First-time users from a verified domain can have accounts created automatically — as members, on a team you pick, up to a cap you set. SSO never grants ownership. You can also require SSO, which removes password and Google sign-in for everyone on a verified domain. Organization owners are deliberately exempt — an unreachable identity provider must never lock you out of your own account.
Not supported: SAML, and SCIM directory sync. If either is a hard requirement, tell us at hello@idlefy.com — demand shapes what we build next.