I am not receiving emails to Zohomail. Hosting using Hostgator, need help in configuration ASAP

I am not receiving emails to Zohomail. Hosting using Hostgator, need help in configuration ASAP

I have purchased my domain www.gtcgroups.com in GoDaddy.in and hosting in Hostgator.

I purchased Hostgator service and trying to configure the email with Zoho and I'm not receiving any mails.

Need help in email configuration.
What should I have to do please resolve my problem.