For commercial use (with additional features) of RainLoop Webmail, it is required to purchase a subscription key and activate it via admin panel. Subscription is purchased for your domain, it will be active throughout subscription period.

Note that subscription key can be activated for a single domain only.

It means that example.com and webmail.example.com are different domains, and if you need RainLoop Webmail to work in commercial mode for all the domains, you'll need to activate them separately using URLs like http://example.com/?admin, and http://webmail.example.com/?admin to access admin panel.

If you have any questions about purchasing, please mail us at support@rainloop.net.