Consider the current tenant in email URLs

app/mailers/application_mailer.rb

@@ -6,7 +6,25 @@ class ApplicationMailer < ActionMailer::Base
   layout "mailer"
   before_action :set_asset_host
 
+  def default_url_options
+    if Tenant.default?
+      super
+    else
+      super.merge(host: host_with_subdomain_for(super[:host]))
+    end
+  end
+
   def set_asset_host
     self.asset_host ||= root_url.delete_suffix("/")
   end
+
+  private
+
+    def host_with_subdomain_for(host)
+      if host == "localhost"
+        "#{Tenant.current_schema}.lvh.me"
+      else
+        "#{Tenant.current_schema}.#{host}"
+      end
+    end
 end