Can i install EMS in this Zimbra mail server?

[maoa28 0]

Hi everyone,

I have been many troubles trying to get information about this topic. I have an oportunity with an acctually client who wants to install EMS in a Zimbra mail server and he has this versión of Zimbra: 8.7.11 (you can see the version in the attachment too).

Is there a KB to clarify this topic or how can I know in which Zimbra version I can install it?

Thanks for your answers!.