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All Customer Portal settings live under Settings → Billing → Customer portal in your Polar dashboard. Each setting is a toggle that enables or disables a specific capability for your customers.

Show metered usage

Adds a Usage tab to the Customer Portal where customers can see their current consumption for each meter on their subscription. This is only relevant if you’ve configured meters on your products. Disabling this toggle hides usage from the portal UI but has no effect on the Customer Portal API — if you’re building a custom usage surface in your own app, the customer meters endpoints continue to work regardless.

Enable subscription seat management

Allows customers to change the number of seats on their active subscription, and to assign or revoke seats for their teammates, directly from the portal. This setting is only relevant when you offer seat-based prices. If you disable it, customers can’t change seat counts or manage assignments from the portal — you’ll need to build that flow yourself against the Customer Seats API.

Allow email address changes

Gives customers the option to change the email address associated with their customer record after purchasing. The new email must be verified through a confirmation link before the change takes effect.
When this is enabled, you’ll probably want to listen for the customer.updated webhook and sync the new email back into your own user system, so the two stay in sync.

Enable subscription plan changes

Lets customers switch between products on their own — upgrading, downgrading, or moving to a different plan entirely — without contacting you. Plan changes follow your proration settings. If you’d rather handle plan changes yourself (for example, because you gate them behind custom logic in your app), disable this and drive updates through the Update Subscription endpoint instead.