G Suite is a set of cloud services by Google. It’s a services used by businesses and includes a shared calendar (keep everyone on the same schedule), shared documents (create and edit documents online), chat features (stay in touch) and most importantly branded email accounts… this means that you can have lots of email address at your domain (example: email@example.com OR firstname.lastname@example.org). All these services are powered by Google so they are very well supported and work with just about every device.
Pricing (as of 1/16/2019) is just $5 per month for each account (email address) you want.
You can buy as many accounts as you want or just have one.
You can read more about G Suite and signup by going here: https://gsuite.google.com