Setting Up A Business Account What Are The Options For Setting Up An Email Account For Home Business

What are the options for setting up an email account for home business - setting up a business account

I think I have an e-mail via Yahoo! With a unique domain name for about $ 20/yr. I started my own business, so I need an account to something like mike@mysmallbusiness.com as a Hotmail or Yahoo. I need help researching, what are my options outside of Yahoo to get this started.