I didn't get an email after registering my domain with Zoho

I didn't get an email after registering my domain with Zoho

I'm setting up a Zoho account and registered a new domain during my purchase process. I got the following emails:
  • Welcome to Zoho!
  • Invoice - ######## from Zoho Corp
  • Zoho Workplace - Your subscription to Zoho Workplace is successful
But what I haven't gotten is the email alluded to in the docs here:  https://www.zoho.com/mail/help/adminconsole/domains.html

"When you register a new domain with Zoho, you receive an email to the contact email address for domain activation."

Now, whenever I try and log into Zoho mail, I'm prompted to verify my domain, when I was told this process should be automatic. What should I do here?