Zimbra is a collaborative software suite, that includes an email server and web client. Zimbra module for HostBill is aimed at automated provisioning and management of Zimbra accounts. Flexible billing options allow you to charge for number of domains, aliases, distribution lists and even class of service usage or mailbox additional space. The module gives your clients access to easily manage their mailboxes and track usage directly from feature-rich client area. What's important, it’s your choice which client features are enabled - you can control client area functions access and appearance in your admin panel!