Setting up email at your .box name comes down to two kinds of DNS record. You do not need to be technical to follow along; this article explains what each one is for. my.box shows the same summary in the Understanding Email Records card on the Email tab.

A verification TXT record is like a digital fingerprint. Your email provider uses it to confirm that you own the name before it will handle email for you. Your provider gives you the exact value to add, and you add it as a TXT record in your DNS settings.

This is the Verify Ownership step on the Email tab.

MX stands for "mail exchange." These records are the post office for your name: they tell the internet which mail servers should receive email sent to your address. Your provider gives you one or more MX records, and email will not arrive until they are in place.

This is the Route Traffic step on the Email tab.

Some providers also have you add records for security and deliverability, such as SPF, DKIM, or DMARC records. You add these the same way, as regular DNS records on the Web tab, following your provider's instructions. my.box's email check focuses on the two essentials above (verification and routing), so these extras are managed with your provider rather than confirmed here.