Auto-create users on first sign-in
Turn on just-in-time provisioning so SSO users get an account on first sign-in. Whether you can do it yourself depends on whether your platform shows a SAML or an OAuth authentication tab.
2 docs tagged with "oauth"
View all tagsConfigure SMTP with OAuth using Microsoft Exchange Online
Send platform email over SMTP with OAuth through Microsoft Exchange Online: register an Azure app, create a client secret, grant SMTP.SendAsApp, add a service account, and configure Email Settings.