Configure your sync settings to keep all of your campaigns and contacts updated across both applications. You can push campaigns to Recruit to update contacts and campaign member status.
To configure your sync settings,
To update unsubscribed contacts go to Campaigns to Recruit Settings and select Update Opt-out. This will update the opt-out in Zoho CRM for those contacts which were unsubscribed from Zoho Campaigns. (Only for records synced with Zoho Recruit).