Updating Domain Registration Information

From myhosting.com Wiki

Why is keeping my contact e-mail up to date important?

It is important to keep your domains' admin e-mail address current as it is at your domains' admin email address that your registrar will contact you with regarding your domain. It is important that your registrar be able to reach you regarding your domain; not keeping your e-mail address current with your registrar may cause delays in changes you might wish to make to your domain name record.