diff --git a/app/mailers/domain_delete_mailer.rb b/app/mailers/domain_delete_mailer.rb
index 1f08204bf..c4190fe14 100644
--- a/app/mailers/domain_delete_mailer.rb
+++ b/app/mailers/domain_delete_mailer.rb
@@ -53,7 +53,12 @@ class DomainDeleteMailer < ApplicationMailer
   private
 
   def confirmation_url(domain)
-    registrant_domain_delete_confirm_url(domain, token: domain.registrant_verification_token)
+    base_url = ENV['registrant_portal_verifications_base_url']
+    if base_url.blank?
+      registrant_domain_delete_confirm_url(domain, token: domain.registrant_verification_token)
+    else
+      "#{base_url}/confirmation/#{domain.name_puny}/#{domain.registrant_verification_token}"
+    end
   end
 
   def forced_email_from
diff --git a/config/application.yml.sample b/config/application.yml.sample
index ab64ed35e..acaa536dd 100644
--- a/config/application.yml.sample
+++ b/config/application.yml.sample
@@ -87,6 +87,9 @@ sk_digi_doc_service_name: 'Testimine'
 registrant_api_base_url:
 registrant_api_auth_allowed_ips: '127.0.0.1, 0.0.0.0' #ips, separated with commas
 
+# Base URL (inc. https://) of REST registrant portal
+# Leave blank to use internal registrant portal
+registrant_portal_verifications_base_url: ''
 #
 # MISC
 
diff --git a/config/routes.rb b/config/routes.rb
index 107484f6e..7061f125f 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -63,6 +63,7 @@ Rails.application.routes.draw do
           resource :registry_lock, only: %i[create destroy]
         end
         resources :contacts, only: %i[index show update], param: :uuid
+        resources :companies, only: %i[index]
       end
 
       resources :auctions, only: %i[index show update], param: :uuid