Do I need to install any additional software?

No. It is not necessary to install any additional software to access your Zimbra MB.

With Zimbra you have the choice of accessing all of your services using the Zimbra web UI, staying in your desktop environment (see below) or some combination thereof that suits your unique needs. Choices can be modified or reversed without any risk.

Our Zimbra email server will sync with the following desktop environments - Microsoft Outlook; Mac desktop applications like iCal, Mail and Address Book and Thunderbird.