I'm new.  It appears I need to create a domain via GoDaddy (in my case) and set that domain up to handle email (my focus at the moment).  Why do I need Zoho?  What does it do that GoDaddy's mail can't do?  I have been using Fastmail for over a decade, usually with a client (Postbox, currently), but (foolishly?) decided to change.  

Zoho seems to make me go through an entirely separate system for service when I thought it was a service provider.  I have begun to question the wisdom of my choice.