Thank you for the quick response. Please what might be the issue that it doesn’t have any mx records again as before adding custom domain name to netlify he sends and receive emails properly. I am a newbie, please help me with any information to solve the issue.
Find out where the DNS is being managed. If it is NameCheap, configure the MX records there. If it’s Netlify, make sure they are there. Once you do that, you should be able to see them using the tool I linked.
He says the mx records for the site is being configured at cpanel and has being using the email: contact@ecolabz.io for months before the subsequent move to netlify. I will instruct him to move back to namecheap basicDns. Thank you for your time and response.