app/mailers/application_mailer.rb
class ApplicationMailer < ActionMailer::Base
append_view_path Rails.root.join('app/views/mailers')
layout 'mailer'
def registrant_confirm_url(domain:, method:)
token = domain.registrant_verification_token
base_url = ENV['registrant_portal_verifications_base_url']
"#{base_url}/confirmation/#{domain.name_puny}/#{method}/#{token}"
end
end