This allows our company to have one Google Apps account, but multiple email domains. You can do this already with Google Apps by adding more domains to your ac

This allows our company to have one Google Apps account, but multiple email domains. You can do this already with Google Apps by adding more domains to your account. If you are using a forwarding service into your primary domain, you run the risk of not being able to properly detect and filter spam from that forwarder (more configuration is required on gapp's side, which isn't always easy to get right).