If you have forgotten to renew your domain you have 30 days to get it back. After your.au domain expires, there is a 30 day grace period during which you can still renew it. After this period, the domain becomes inactive and can be registered by anyone (including one of your competitors!) If your domain expires anything linked to the domain (such as a website or emails) will also cease to function until it is renewed. For your peace of mind, Webics sends out a reminder that the domain is due for renewal 90 days before the due date.