An email approval process is the most common domain validation method for a certificate. It is required for domain-validated certificates.
This process validates the domain is registered and someone with administrator rights on the domain is aware of and approves the certificate request.
The email approval process consists of three steps:
Disable Whois Privacy Protection
Whois Privacy Protection services are known to interfere with the delivery of the approval email. Be sure to temporarily disable the Whois Privacy feature or any another privacy protection service until the certificate is issued.
The approval email typically can be sent to the following addresses: