feat(user): always allow devise mail

app/mailers/concerns/balanced_delivery_concern.rb

@@ -8,6 +8,10 @@ module BalancedDeliveryConcern
       self.class.critical_email?(action_name)
     end
 
+    def bypass_unverified_mail_protection!
+      headers[BalancerDeliveryMethod::BYPASS_UNVERIFIED_MAIL_PROTECTION] = true
+    end
+
     private
 
     def forced_delivery_provider?

app/mailers/devise_user_mailer.rb

@@ -34,6 +34,8 @@ class DeviseUserMailer < Devise::Mailer
     @procedure = opts[:procedure_after_confirmation] || nil
     @prefill_token = opts[:prefill_token]
 
+    bypass_unverified_mail_protection!
+
     I18n.with_locale(record.locale) do
       super
     end

spec/lib/balancer_delivery_method_spec.rb

@@ -1,20 +1,23 @@
 RSpec.describe BalancerDeliveryMethod do
   class ExampleMailer < ApplicationMailer
+    include BalancedDeliveryConcern
+
     def greet(name, bypass_unverified_mail_protection: true)
       mail(to: name, from: "smtp_from", body: "Hello #{name}")
 
-      if bypass_unverified_mail_protection
+      bypass_unverified_mail_protection! if bypass_unverified_mail_protection
-        headers['BYPASS_UNVERIFIED_MAIL_PROTECTION'] = true
-      end
     end
   end
 
   class ImportantEmail < ApplicationMailer
+    include BalancedDeliveryConcern
+
     before_action :set_x_deliver_with
 
     def greet(name)
       mail(to: name, from: "smtp_from", body: "Hello #{name}")
-      headers['BYPASS_UNVERIFIED_MAIL_PROTECTION'] = true
+
+      bypass_unverified_mail_protection!
     end
 
     private

spec/mailers/devise_user_mailer_spec.rb

@@ -5,7 +5,10 @@ RSpec.describe DeviseUserMailer, type: :mailer do
     subject { described_class.confirmation_instructions(user, token, opts = {}) }
 
     context 'without SafeMailer configured' do
-      it { expect(subject[BalancerDeliveryMethod::FORCE_DELIVERY_METHOD_HEADER]&.value).to eq(nil) }
+      it do
+        expect(subject[BalancerDeliveryMethod::FORCE_DELIVERY_METHOD_HEADER]&.value).to eq(nil)
+        expect(subject[BalancerDeliveryMethod::BYPASS_UNVERIFIED_MAIL_PROTECTION]).to be_present
+      end
     end
 
     context 'with SafeMailer configured' do