Google Suite is something like $5 / month per domain name so offering that as a free feature would be a pretty big deal.
And they probably want to reserve usage of their domain for email so you know it's a staff member you're dealing with, which is why google gives away gmail.com addresses, not google.com addresses.
Here are three less expensive email options for you:
1. get a VM and install exim/postfix 2. OpenSRS https://opensrs.com/services/hosted-email/ 3. AWS workmail https://aws.amazon.com/workmail/
> And they probably want to reserve usage of their domain for email so you know it's a staff member you're dealing with, which is why google gives away gmail.com addresses, not google.com addresses.
These inboxes would be for your custom domain that you registered, not @cloudflare.com for everyone. I used that for his because it sounds like he works there.
Yours would be x13@whateverdomainyouregistered.com.