Can you pls describe me this function and tell me how it works
Which email service you’re using??
You can set mx record by going to “Set Web Address --(You parked Domain)Manage – Set MX Record”.
And for what do I need a mx record?
For using email services like “gapps” “zoho mail services” and so on.
Zoho. Mail services, I think
They provide instructions on how to verify using CNAME records. However, if you parked your website using nameservers, you will need to setup with Cloudflare to make it work.