We focus on web hosting, and no longer officially support hosting email mailboxes on our web servers (due to the complexities of spam filtering, data storage, numerous complex DNS SPF/DKIM/DMARC records required to avoid being filtered into Spam, and the high levels of technical support often required).
We highly recommend the following domain name email mailbox hosting providers (priced yearly or $1-6/month per user):
Many domain registrars provide free domain email forwarding for free or small yearly costs.
Free and paid domain email forwarding services (no mailbox storage):