Zoho one domain transfer

Hi

I bought a Zoho One account. Currently i have a website + domain + email hosted at one.com.

I want to transfer my domain to another registrar because one.com says they are not compatible with Zoho. For example i want to transer my domain. jconi.be to iwantmyname.com. Now i have 2 e-mailboxes connect that i use. I want to keep using those mail adresses but how can i transfer these? This is not clear to me. Can i still use them once i transfer my domain?

Kind regards

Kevin