Zoho Leave Tracker offers the option to sync the leave Calendar to Microsoft 365 and Google Calendar. 

Adding an option to sync to Zoho-Mail Calendar would  avoid duplication and add significant value for users.

An alternative would be to allow users to download the calendaring file form their own Leave Tracker so that they could then manually upload it to their Zoho-Mail Calendar instance. 

Please could either of these options be considered?

Thank you