Before setting up your email account and sending emails in Equipt360, you need a domain (that you can access the DNS records for) and a professional email address.
The next 2 videos will help you set that up if you don't already have it.
SPF—
Add include:mailgun.org to current SPF record
DMARC—
v=DMARC1; p=none; rua=mailto:youremail@yourdomain.com