We use open Zimbra version 8.0.7. Previously we were using Exchange 2003 with Outlook 2003.
In Outlook 2003 there was a function to retrieve message already sent. There is a Zimbra Zimlet, Undo Send, whose functionality is similar, but in version 8.0.7 there is nothing, undo send is not compatible.
Is there any option available? is possible that future versions of Zimbra is implemented?