What does Zimbra sell?
Zimbra sells annual licenses for the Zimbra Collaboration Suite (ZCS), and support for systems administrators in the support of ZCS. With different features, there are different editions of ZCS, ranging from free (the entirely open source version), to the Network Professional Edition and its options such as Zimbra Mobile, and Zimbra Archiving and Discovery. Zimbra charges a standard rate of $28/mailbox/year for the Network Professional Edition, in minimum increments of 25 users ($875/year minimum). If you allow your paid, commercial Zimbra license to expire, it reverts to the open-source edition. Zimbra sells licenses directly, and through a network of Zimbra value-added-resellers such as 01.com. Zimbra also has relationships with various hosting providers such as 01.com, who deliver Zimbra as Software as a Service (SaaS), a turn-key solution for organizations to rent the use of Zimbra on a per mailbox, per month basis, securely across the internet.
