As a rule, the verification doesn’t take long: the domain owner gets an email with a link to confirm that they ordered the certificate.
The email address must be linked to the domain that you ordered the SSL certificate for. For example, if you order a certificate for a domain named site.com, you can only choose one of the following addresses on the “Email for confirmation” stage: firstname.lastname@example.org email@example.com firstname.lastname@example.org email@example.com firstname.lastname@example.org
Most SSL verification requests are processed automatically. However, certification centers may process some requests by hand, which is why it make take a bit longer than usual (most requests are processes within 10 minutes).