OIDC integration policy authorisation


I setup Okta OIDC authentication, and have existing policies attached to user email IDs in Vault. Will a user who signed in via Okta OIDC gets the required permission (the user email ID is attached with a policy in Vault)? Does the OIDC token that gets sent to Vault provide the user email ID?
I tested logging in via Okta OIDC but could not see the secrets engine, i.e. the required policy is not there for the user.