With your Zoho CRM integration, you can automatically sync email activity from Klenty.
To set up the triggers, go to Settings -> CRM -> Triggers. You can enable the ones that will help your workflow.
Once the activity is synced to Zoho, it will appear as a closed activity for the lead/contact in Zoho.
If you've set up triggers for tasks/calls, then open activities will be created in Zoho