How to connect the ZOHO mail to your professional website.

How to connect the ZOHO mail to your professional website.

Hello!

I have gone through some tutorials where I have learnt to create the professional site email for your business. 

For example: I have a website, tennisworld.  SO i Can create a gmail where I will be able to add my domain name into my email. That will make this look so professional. 

In short, how to create your professional gmail for your site?

If any expert will guide mere here it will save much of my time to surf the internet. 
I will wait for the response of expert people here. 

Thanks.