To check the version of the hosted Zimbra service, follow these steps to check it using the Zimbra Web console.
1. Using a web browser, navigate to https://mail.zimbraservice.com and log into the desired mailbox.
2. In the top, right-hand corner of your screen, you will see Help, click the small arrow next to it and select About.
3. At the top of this About section, you can clearly see your version of Zimbra.