For operations that require confirmation that the email address for the registrant contact is valid, such as registering a new domain, this operation resends the confirmation email to the current email address for the registrant contact.
See https://paws-r.github.io/docs/route53domains/resend_contact_reachability_email.html for full documentation.
route53domains_resend_contact_reachability_email(domainName = NULL)The name of the domain for which you want Route 53 to resend a confirmation email to the registrant contact.