Renewals are handled through your client area according to the billing cycle attached to your service. Depending on your account configuration, you may see an invoice before the due date or have the option to use an automatic renewal method if supported.
Always review the renewal timing shown in your account and make sure the payment method on file is valid. A missed renewal can affect service continuity.
If you are managing mail for a business, do not wait until the last minute to handle billing.