# Dynamic Configuration

* `THROTTLING_SETTINGS`: Per-scope throttling limits for login, password-reset, register, and user-unsubscribe scopes (e.g., `{"login":{"count":5,"duration":60}}`).
* `GUEST_USER_REGISTRATION_REQUIRES_EMAIL_VERIFICATION`: When enabled, blocks login for guest users (created during checkout) who have the `verification_required` attribute until they verify their email address. These users are automatically assigned `verification_required=true` when created via the checkout process.
* `SMS_OTP_EXPIRE_TIME`: Time in seconds before an SMS OTP code expires. Default: 180 seconds. Set to 0 to disable expiration.


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