Zoho Mail Admin Console Configure Email Delivery Update MX to receive emails : Register.com
Once saved, you have added the MX records in your Register.com DNS. You can check the propagation of MX records using the third party tool www.mxtoolbox.com.When you provide the domain name in the tool, the MX records of Zoho Mail should be returned as the result. In case you have difficulties adding the MX entries, you can get the assistance of Register.com support, to update the MX records of your domain.