Unable to add calendar event to salesforce via zimlet
I am using Zimbra web client.
I am able to add zimbra emails to Contacts/Leads into salesforce (as Activity History). Some online posts suggest that we should be able to drag and drop events onto the salesforce zimlet. When I try to drag and drop, nothing happens - i.e. i am prevented from being able to drop the event onto the zimlet in the first place.
But i am unable to add events that have contacts/leads as invitees to salesforce.
Is there a setting on the Zimbra server that i am missing ?